Child evidence d05e4664b4e246c796ec974d5f99f92a

Historical child tool evidence. Commands are inert; read alongside the parent outcome.

You

Workspace: /private/tmp/odsc-workshop6-v2/ledger-team-t1

README.md there is the complete acceptance contract. Your job: implement ONLY the file reducer.py (function `summarize(lines)`). It must use `codec.decode` from codec.py (the import is already at the top of the stub). Do NOT edit codec.py or test_ledger.py, and do NOT create any new files. Use `PYTHONDONTWRITEBYTECODE=1` in all shell commands. Do not run git commands, do not install anything, no network.

Contract (verbatim README clauses relevant to you):
"summarize consumes iterable encoded records [event_id, account, signed_integer_cents]. Each record has exactly 3 fields, cents matches optional minus sign followed by one or more ASCII digits (leading zeros allowed, + disallowed). Account and ID may be empty or contain escaped delimiters. Exact retransmissions (same decoded ID/account/integer cents) count once. Conflicting duplicate IDs raise ValueError. Malformed encoding, field count or cents raises ValueError. Return dict account -> summed integer cents, retaining zero totals; empty input -> {}. Use codec.decode in reducer. Do not mutate input."

The team interface for codec (agreed, from README — codec.py may still be a stub on disk while you work; DO NOT rely on its on-disk state):
- codec.decode(line: str) -> list[str]: inverse of encode; splits on unescaped '|'; preserves empty and Unicode fields; raises ValueError on trailing backslash or escape other than '\\' or '|'; decode("") == [""].
Behavior requirements for summarize(lines):
- lines is any iterable of encoded record strings (list, generator, or file-like). Handle a trailing single newline per line: if a line ends with '\n', drop it; then if it ends with '\r', drop it (so "a|b|c\n" and "a|b|c" are equivalent). Do NOT mutate or consume the input iterable beyond iterating it.
- Decode each line with codec.decode; propagate any ValueError from decode unchanged.
- After decoding there must be exactly 3 fields: [event_id, account, cents_field]; otherwise raise ValueError.
- cents_field must fully match `-?[0-9]+` (ASCII digit regex, not \d): optional ASCII minus then one or more ASCII digits. Leading zeros allowed, '+' disallowed, anything else (empty, spaces, '.', unicode digits, letters) -> ValueError. Convert cents_field to Python int.
- event_id and account may be empty and may contain escaped delimiters (they come back already unescaped from decode). Preserve them exactly as the decoded values.
- Exact retransmission = same decoded event_id AND same account AND same integer cents; count once (do not add twice).
- Conflicting duplicate ID: same decoded event_id appearing with a different account OR a different integer cents (including e.g. "10" vs "-10", "10" vs "7") -> raise ValueError. Note "5" and "05" both equal integer 5, so same id + same account + "5" then "05" is an exact retransmission, NOT a conflict.
- Result: dict mapping account -> summed integer cents across all unique records. Accounts that appear must remain in the dict even when their total is 0 ("retaining zero totals"). Empty input -> {}.
- Do not change any input structure/list; strings are immutable so just don't write to whatever you're given.

IMPORTANT verification approach (you cannot rely on codec.py being implemented): verify your reducer with in-memory probes by injecting a reference `codec` module into sys.modules inside the python heredoc, e.g.:

```
import sys, types
ref = types.ModuleType("codec")
def _enc(f): ...
def decode(line): ...  # reference implementation matching the agreed interface above
ref.decode = decode
sys.modules["codec"] = ref
import reducer
```

Do NOT write this reference into any file and do NOT alter the on-disk codec.py. (If by the time you run, codec.py on disk already implements the interface, you may additionally run an integration probe against the real codec at the end for confidence, but your correctness must stand with the injected module.)

Cover at minimum these probes against summarize:
1. summarize([]) == {}
2. single record, e.g. ["e1|acct|10"] -> {"acct": 10}
3. multiple records summing: ["a1|x|5","a2|x|3","a3|x|-8"] -> {"x": 0} (zero retained)
4. empty account: ["e0||5","e1||7"] -> {"": 12}; empty id: ["|x|9"] -> {"x": 9}
5. escaped delimiters: id "a\b", account "North|South", cents "-100" encoded via the reference encoder -> decoded account key "North|South" with -100
6. leading zeros: ["e|x|0007"] -> {"x": 7}; unicode cents "١٢" (Arabic digits) -> ValueError
7. cents validation: "5" ok, "-5" ok, "" ValueError, "+5" ValueError, "5.0" ValueError, "x" ValueError, "5 " ValueError
8. field count: "a|b" and "a|b|c|d" -> ValueError; malformed encoding line like "a\\x|b|c" -> ValueError (from decode)
9. exact retransmission: ["e|x|10","e|x|10","e|x|010"] -> {"x": 10}
10. conflicts: ["e|x|10","e|y|10"] -> ValueError; ["e|x|10","e|x|-10"] -> ValueError; ["e|x|5","e|x|05"] -> OK {"x":5}
11. input immutability: pass a list, confirm after the call the list is unchanged.
12. iterable input: a generator expression works; trailing-newline variant "e|x|10\n" and "e|x|10\r\n" equal "e|x|10".

Report back concisely:
- The exact summary of your summarize implementation (structure, not full code).
- Each probe (input -> expected -> observed) and pass/fail, including the ValueError cases.
- Your assumptions (especially newline-stripping and the "5"/"05" decision).
Keep the report under ~700 words. Do not describe changes to any file other than reducer.py.

Full event evidence

{
  "id": "e2fd8c2a-88ef-4eb2-89b2-3a6b8ce1ce2f",
  "timestamp": "2026-10-18T20:21:55.193896",
  "source": "user",
  "parent_id": "5985b880-6a34-436a-b7d7-c38ca2b3d837",
  "llm_message": {
    "role": "user",
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Workspace: /private/tmp/odsc-workshop6-v2/ledger-team-t1\n\nREADME.md there is the complete acceptance contract. Your job: implement ONLY the file reducer.py (function `summarize(lines)`). It must use `codec.decode` from codec.py (the import is already at the top of the stub). Do NOT edit codec.py or test_ledger.py, and do NOT create any new files. Use `PYTHONDONTWRITEBYTECODE=1` in all shell commands. Do not run git commands, do not install anything, no network.\n\nContract (verbatim README clauses relevant to you):\n\"summarize consumes iterable encoded records [event_id, account, signed_integer_cents]. Each record has exactly 3 fields, cents matches optional minus sign followed by one or more ASCII digits (leading zeros allowed, + disallowed). Account and ID may be empty or contain escaped delimiters. Exact retransmissions (same decoded ID/account/integer cents) count once. Conflicting duplicate IDs raise ValueError. Malformed encoding, field count or cents raises ValueError. Return dict account -> summed integer cents, retaining zero totals; empty input -> {}. Use codec.decode in reducer. Do not mutate input.\"\n\nThe team interface for codec (agreed, from README — codec.py may still be a stub on disk while you work; DO NOT rely on its on-disk state):\n- codec.decode(line: str) -> list[str]: inverse of encode; splits on unescaped '|'; preserves empty and Unicode fields; raises ValueError on trailing backslash or escape other than '\\\\' or '|'; decode(\"\") == [\"\"].\nBehavior requirements for summarize(lines):\n- lines is any iterable of encoded record strings (list, generator, or file-like). Handle a trailing single newline per line: if a line ends with '\\n', drop it; then if it ends with '\\r', drop it (so \"a|b|c\\n\" and \"a|b|c\" are equivalent). Do NOT mutate or consume the input iterable beyond iterating it.\n- Decode each line with codec.decode; propagate any ValueError from decode unchanged.\n- After decoding there must be exactly 3 fields: [event_id, account, cents_field]; otherwise raise ValueError.\n- cents_field must fully match `-?[0-9]+` (ASCII digit regex, not \\d): optional ASCII minus then one or more ASCII digits. Leading zeros allowed, '+' disallowed, anything else (empty, spaces, '.', unicode digits, letters) -> ValueError. Convert cents_field to Python int.\n- event_id and account may be empty and may contain escaped delimiters (they come back already unescaped from decode). Preserve them exactly as the decoded values.\n- Exact retransmission = same decoded event_id AND same account AND same integer cents; count once (do not add twice).\n- Conflicting duplicate ID: same decoded event_id appearing with a different account OR a different integer cents (including e.g. \"10\" vs \"-10\", \"10\" vs \"7\") -> raise ValueError. Note \"5\" and \"05\" both equal integer 5, so same id + same account + \"5\" then \"05\" is an exact retransmission, NOT a conflict.\n- Result: dict mapping account -> summed integer cents across all unique records. Accounts that appear must remain in the dict even when their total is 0 (\"retaining zero totals\"). Empty input -> {}.\n- Do not change any input structure/list; strings are immutable so just don't write to whatever you're given.\n\nIMPORTANT verification approach (you cannot rely on codec.py being implemented): verify your reducer with in-memory probes by injecting a reference `codec` module into sys.modules inside the python heredoc, e.g.:\n\n```\nimport sys, types\nref = types.ModuleType(\"codec\")\ndef _enc(f): ...\ndef decode(line): ...  # reference implementation matching the agreed interface above\nref.decode = decode\nsys.modules[\"codec\"] = ref\nimport reducer\n```\n\nDo NOT write this reference into any file and do NOT alter the on-disk codec.py. (If by the time you run, codec.py on disk already implements the interface, you may additionally run an integration probe against the real codec at the end for confidence, but your correctness must stand with the injected module.)\n\nCover at minimum these probes against summarize:\n1. summarize([]) == {}\n2. single record, e.g. [\"e1|acct|10\"] -> {\"acct\": 10}\n3. multiple records summing: [\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"] -> {\"x\": 0} (zero retained)\n4. empty account: [\"e0||5\",\"e1||7\"] -> {\"\": 12}; empty id: [\"|x|9\"] -> {\"x\": 9}\n5. escaped delimiters: id \"a\\b\", account \"North|South\", cents \"-100\" encoded via the reference encoder -> decoded account key \"North|South\" with -100\n6. leading zeros: [\"e|x|0007\"] -> {\"x\": 7}; unicode cents \"١٢\" (Arabic digits) -> ValueError\n7. cents validation: \"5\" ok, \"-5\" ok, \"\" ValueError, \"+5\" ValueError, \"5.0\" ValueError, \"x\" ValueError, \"5 \" ValueError\n8. field count: \"a|b\" and \"a|b|c|d\" -> ValueError; malformed encoding line like \"a\\\\x|b|c\" -> ValueError (from decode)\n9. exact retransmission: [\"e|x|10\",\"e|x|10\",\"e|x|010\"] -> {\"x\": 10}\n10. conflicts: [\"e|x|10\",\"e|y|10\"] -> ValueError; [\"e|x|10\",\"e|x|-10\"] -> ValueError; [\"e|x|5\",\"e|x|05\"] -> OK {\"x\":5}\n11. input immutability: pass a list, confirm after the call the list is unchanged.\n12. iterable input: a generator expression works; trailing-newline variant \"e|x|10\\n\" and \"e|x|10\\r\\n\" equal \"e|x|10\".\n\nReport back concisely:\n- The exact summary of your summarize implementation (structure, not full code).\n- Each probe (input -> expected -> observed) and pass/fail, including the ValueError cases.\n- Your assumptions (especially newline-stripping and the \"5\"/\"05\" decision).\nKeep the report under ~700 words. Do not describe changes to any file other than reducer.py."
      }
    ],
    "thinking_blocks": []
  },
  "activated_skills": [],
  "extended_content": [],
  "kind": "MessageEvent"
}

Tool request: file_editor

{
  "command": "str_replace",
  "path": "/private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py",
  "old_str": "from codec import decode\ndef summarize(lines):\n raise NotImplementedError",
  "new_str": "from codec import decode\n\n\ndef _strip_newline(line):\n    if line.endswith(\"\\n\"):\n        line = line[:-1]\n    if line.endswith(\"\\r\"):\n        line = line[:-1]\n    return line\n\n\ndef summarize(lines):\n    totals = {}\n    seen = {}\n    for raw in lines:\n        line = _strip_newline(raw)\n        fields = decode(line)\n        if len(fields) != 3:\n            raise ValueError(\"record must have exactly 3 fields\")\n        event_id, account, cents_field = fields\n        if not cents_field or cents_field[0] == \"+\" or not cents_field.lstrip(\"-\").isdigit() or \"-\" in cents_field[1:]:\n            raise ValueError(\"invalid cents field: %r\" % (cents_field,))\n        cents = int(cents_field)\n        prior = seen.get(event_id)\n        if prior is not None:\n            prev_account, prev_cents = prior\n            if prev_account != account or prev_cents != cents:\n                raise ValueError(\"conflicting duplicate event id %r\" % (event_id,))\n            continue\n        seen[event_id] = (account, cents)\n        totals[account] = totals.get(account, 0) + cents\n    return totals",
  "kind": "FileEditorAction"
}

Full event evidence

{
  "id": "b693d788-8704-4ebb-b1c5-3d60b659958f",
  "timestamp": "2026-10-18T20:22:07.418551",
  "source": "agent",
  "parent_id": "4333979d-0d2e-4916-883b-a46bffbedc1f",
  "thought": [],
  "reasoning_content": null,
  "thinking_blocks": [],
  "action": {
    "command": "str_replace",
    "path": "/private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py",
    "old_str": "from codec import decode\ndef summarize(lines):\n raise NotImplementedError",
    "new_str": "from codec import decode\n\n\ndef _strip_newline(line):\n    if line.endswith(\"\\n\"):\n        line = line[:-1]\n    if line.endswith(\"\\r\"):\n        line = line[:-1]\n    return line\n\n\ndef summarize(lines):\n    totals = {}\n    seen = {}\n    for raw in lines:\n        line = _strip_newline(raw)\n        fields = decode(line)\n        if len(fields) != 3:\n            raise ValueError(\"record must have exactly 3 fields\")\n        event_id, account, cents_field = fields\n        if not cents_field or cents_field[0] == \"+\" or not cents_field.lstrip(\"-\").isdigit() or \"-\" in cents_field[1:]:\n            raise ValueError(\"invalid cents field: %r\" % (cents_field,))\n        cents = int(cents_field)\n        prior = seen.get(event_id)\n        if prior is not None:\n            prev_account, prev_cents = prior\n            if prev_account != account or prev_cents != cents:\n                raise ValueError(\"conflicting duplicate event id %r\" % (event_id,))\n            continue\n        seen[event_id] = (account, cents)\n        totals[account] = totals.get(account, 0) + cents\n    return totals",
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_bb886b3c710543df827e00e7",
  "tool_call": {
    "id": "call_bb886b3c710543df827e00e7",
    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py\", \"old_str\": \"from codec import decode\\ndef summarize(lines):\\n raise NotImplementedError\", \"new_str\": \"from codec import decode\\n\\n\\ndef _strip_newline(line):\\n    if line.endswith(\\\"\\\\n\\\"):\\n        line = line[:-1]\\n    if line.endswith(\\\"\\\\r\\\"):\\n        line = line[:-1]\\n    return line\\n\\n\\ndef summarize(lines):\\n    totals = {}\\n    seen = {}\\n    for raw in lines:\\n        line = _strip_newline(raw)\\n        fields = decode(line)\\n        if len(fields) != 3:\\n            raise ValueError(\\\"record must have exactly 3 fields\\\")\\n        event_id, account, cents_field = fields\\n        if not cents_field or cents_field[0] == \\\"+\\\" or not cents_field.lstrip(\\\"-\\\").isdigit() or \\\"-\\\" in cents_field[1:]:\\n            raise ValueError(\\\"invalid cents field: %r\\\" % (cents_field,))\\n        cents = int(cents_field)\\n        prior = seen.get(event_id)\\n        if prior is not None:\\n            prev_account, prev_cents = prior\\n            if prev_account != account or prev_cents != cents:\\n                raise ValueError(\\\"conflicting duplicate event id %r\\\" % (event_id,))\\n            continue\\n        seen[event_id] = (account, cents)\\n        totals[account] = totals.get(account, 0) + cents\\n    return totals\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792372923-ac862MfwmQYDaSdBeP6F",
  "security_risk": "UNKNOWN",
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py\", \"old_str\": \"from codec import decode\\ndef summarize(lines):\\n raise NotImplementedError\", \"new_str\": \"from codec import decode\\n\\n\\ndef _strip_newline(line):\\n    if line.endswith(\\\"\\\\n\\\"):\\n        line = line[:-1]\\n    if line.endswith(\\\"\\\\r\\\"):\\n        line = line[:-1]\\n    return line\\n\\n\\ndef summarize(lines):\\n    totals = {}\\n    seen = {}\\n    for raw in lines:\\n        line = _strip_newline(raw)\\n        fields = decode(line)\\n        if len(fields) != 3:\\n            raise ValueError(\\\"record must have exactly 3 fields\\\")\\n        event_id, account, cents_field = fields\\n        if not cents_field or cents_field[0] == \\\"+\\\" or not cents_field.lstrip(\\\"-\\\").isdigit() or \\\"-\\\" in cents_field[1:]:\\n            raise ValueError(\\\"invalid cents field: %r\\\" % (cents_field,))\\n        cents = int(cents_field)\\n        prior = seen.get(event_id)\\n        if prior is not None:\\n            prev_account, prev_cents = prior\\n            if prev_account != account or prev_cents != cents:\\n                raise ValueError(\\\"conflicting duplicate event id %r\\\" % (event_id,))\\n            continue\\n        seen[event_id] = (account, cents)\\n        totals[account] = totals.get(account, 0) + cents\\n    return totals\"}",
  "kind": "ActionEvent"
}

Tool result: file_editor

The file /private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py has been edited. Here's the result of running `cat -n` on a snippet of /private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py:
     1	from codec import decode
     2	
     3	
     4	def _strip_newline(line):
     5	    if line.endswith("\n"):
     6	        line = line[:-1]
     7	    if line.endswith("\r"):
     8	        line = line[:-1]
     9	    return line
    10	
    11	
    12	def summarize(lines):
    13	    totals = {}
    14	    seen = {}
    15	    for raw in lines:
    16	        line = _strip_newline(raw)
    17	        fields = decode(line)
    18	        if len(fields) != 3:
    19	            raise ValueError("record must have exactly 3 fields")
    20	        event_id, account, cents_field = fields
    21	        if not cents_field or cents_field[0] == "+" or not cents_field.lstrip("-").isdigit() or "-" in cents_field[1:]:
    22	            raise ValueError("invalid cents field: %r" % (cents_field,))
    23	        cents = int(cents_field)
    24	        prior = seen.get(event_id)
    25	        if prior is not None:
    26	            prev_account, prev_cents = prior
    27	            if prev_account != account or prev_cents != cents:
    28	                raise ValueError("conflicting duplicate event id %r" % (event_id,))
    29	            continue
    30	        seen[event_id] = (account, cents)
    31	        totals[account] = totals.get(account, 0) + cents
    32	    return totals
    33	
Review the changes and make sure they are as expected. Edit the file again if necessary.

Full event evidence

{
  "id": "1918b1cc-60b4-4b03-8fdd-17d5e2414a43",
  "timestamp": "2026-10-18T20:22:07.428358",
  "source": "environment",
  "parent_id": "b693d788-8704-4ebb-b1c5-3d60b659958f",
  "tool_name": "file_editor",
  "tool_call_id": "call_bb886b3c710543df827e00e7",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "The file /private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py has been edited. Here's the result of running `cat -n` on a snippet of /private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py:\n     1\tfrom codec import decode\n     2\t\n     3\t\n     4\tdef _strip_newline(line):\n     5\t    if line.endswith(\"\\n\"):\n     6\t        line = line[:-1]\n     7\t    if line.endswith(\"\\r\"):\n     8\t        line = line[:-1]\n     9\t    return line\n    10\t\n    11\t\n    12\tdef summarize(lines):\n    13\t    totals = {}\n    14\t    seen = {}\n    15\t    for raw in lines:\n    16\t        line = _strip_newline(raw)\n    17\t        fields = decode(line)\n    18\t        if len(fields) != 3:\n    19\t            raise ValueError(\"record must have exactly 3 fields\")\n    20\t        event_id, account, cents_field = fields\n    21\t        if not cents_field or cents_field[0] == \"+\" or not cents_field.lstrip(\"-\").isdigit() or \"-\" in cents_field[1:]:\n    22\t            raise ValueError(\"invalid cents field: %r\" % (cents_field,))\n    23\t        cents = int(cents_field)\n    24\t        prior = seen.get(event_id)\n    25\t        if prior is not None:\n    26\t            prev_account, prev_cents = prior\n    27\t            if prev_account != account or prev_cents != cents:\n    28\t                raise ValueError(\"conflicting duplicate event id %r\" % (event_id,))\n    29\t            continue\n    30\t        seen[event_id] = (account, cents)\n    31\t        totals[account] = totals.get(account, 0) + cents\n    32\t    return totals\n    33\t\nReview the changes and make sure they are as expected. Edit the file again if necessary."
      }
    ],
    "is_error": false,
    "command": "str_replace",
    "path": "/private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py",
    "prev_exist": true,
    "old_content": "from codec import decode\ndef summarize(lines):\n raise NotImplementedError\n",
    "new_content": "from codec import decode\n\n\ndef _strip_newline(line):\n    if line.endswith(\"\\n\"):\n        line = line[:-1]\n    if line.endswith(\"\\r\"):\n        line = line[:-1]\n    return line\n\n\ndef summarize(lines):\n    totals = {}\n    seen = {}\n    for raw in lines:\n        line = _strip_newline(raw)\n        fields = decode(line)\n        if len(fields) != 3:\n            raise ValueError(\"record must have exactly 3 fields\")\n        event_id, account, cents_field = fields\n        if not cents_field or cents_field[0] == \"+\" or not cents_field.lstrip(\"-\").isdigit() or \"-\" in cents_field[1:]:\n            raise ValueError(\"invalid cents field: %r\" % (cents_field,))\n        cents = int(cents_field)\n        prior = seen.get(event_id)\n        if prior is not None:\n            prev_account, prev_cents = prior\n            if prev_account != account or prev_cents != cents:\n                raise ValueError(\"conflicting duplicate event id %r\" % (event_id,))\n            continue\n        seen[event_id] = (account, cents)\n        totals[account] = totals.get(account, 0) + cents\n    return totals\n",
    "kind": "FileEditorObservation"
  },
  "action_id": "b693d788-8704-4ebb-b1c5-3d60b659958f",
  "extended_content": [],
  "kind": "ObservationEvent"
}

Tool result: file_editor

The file /private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py has been edited. Here's the result of running `cat -n` on a snippet of /private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py:
    17	        fields = decode(line)
    18	        if len(fields) != 3:
    19	            raise ValueError("record must have exactly 3 fields")
    20	        event_id, account, cents_field = fields
    21	        digits = cents_field[1:] if cents_field.startswith("-") else cents_field
    22	        if not digits or "-" in cents_field[1:] or not _is_ascii_digits(digits):
    23	            raise ValueError("invalid cents field: %r" % (cents_field,))
    24	        cents = int(cents_field)
    25	        prior = seen.get(event_id)
    26	        if prior is not None:
    27	            prev_account, prev_cents = prior
    28	            if prev_account != account or prev_cents != cents:
    29	
Review the changes and make sure they are as expected. Edit the file again if necessary.

Full event evidence

{
  "id": "cbe87ed7-500e-41f6-8a30-2b06ccc5d925",
  "timestamp": "2026-10-18T20:22:16.879033",
  "source": "environment",
  "parent_id": "d2591e21-e3ab-4a79-8848-761470c112c0",
  "tool_name": "file_editor",
  "tool_call_id": "call_e60f041e02bc409391c97a18",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "The file /private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py has been edited. Here's the result of running `cat -n` on a snippet of /private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py:\n    17\t        fields = decode(line)\n    18\t        if len(fields) != 3:\n    19\t            raise ValueError(\"record must have exactly 3 fields\")\n    20\t        event_id, account, cents_field = fields\n    21\t        digits = cents_field[1:] if cents_field.startswith(\"-\") else cents_field\n    22\t        if not digits or \"-\" in cents_field[1:] or not _is_ascii_digits(digits):\n    23\t            raise ValueError(\"invalid cents field: %r\" % (cents_field,))\n    24\t        cents = int(cents_field)\n    25\t        prior = seen.get(event_id)\n    26\t        if prior is not None:\n    27\t            prev_account, prev_cents = prior\n    28\t            if prev_account != account or prev_cents != cents:\n    29\t\nReview the changes and make sure they are as expected. Edit the file again if necessary."
      }
    ],
    "is_error": false,
    "command": "str_replace",
    "path": "/private/tmp/odsc-workshop6-v2/ledger-team-t1/reducer.py",
    "prev_exist": true,
    "old_content": "from codec import decode\n\n\ndef _strip_newline(line):\n    if line.endswith(\"\\n\"):\n        line = line[:-1]\n    if line.endswith(\"\\r\"):\n        line = line[:-1]\n    return line\n\n\ndef summarize(lines):\n    totals = {}\n    seen = {}\n    for raw in lines:\n        line = _strip_newline(raw)\n        fields = decode(line)\n        if len(fields) != 3:\n            raise ValueError(\"record must have exactly 3 fields\")\n        event_id, account, cents_field = fields\n        if not cents_field or cents_field[0] == \"+\" or not cents_field.lstrip(\"-\").isdigit() or \"-\" in cents_field[1:]:\n            raise ValueError(\"invalid cents field: %r\" % (cents_field,))\n        cents = int(cents_field)\n        prior = seen.get(event_id)\n        if prior is not None:\n            prev_account, prev_cents = prior\n            if prev_account != account or prev_cents != cents:\n                raise ValueError(\"conflicting duplicate event id %r\" % (event_id,))\n            continue\n        seen[event_id] = (account, cents)\n        totals[account] = totals.get(account, 0) + cents\n    return totals\n",
    "new_content": "from codec import decode\n\n\ndef _strip_newline(line):\n    if line.endswith(\"\\n\"):\n        line = line[:-1]\n    if line.endswith(\"\\r\"):\n        line = line[:-1]\n    return line\n\n\ndef summarize(lines):\n    totals = {}\n    seen = {}\n    for raw in lines:\n        line = _strip_newline(raw)\n        fields = decode(line)\n        if len(fields) != 3:\n            raise ValueError(\"record must have exactly 3 fields\")\n        event_id, account, cents_field = fields\n        digits = cents_field[1:] if cents_field.startswith(\"-\") else cents_field\n        if not digits or \"-\" in cents_field[1:] or not _is_ascii_digits(digits):\n            raise ValueError(\"invalid cents field: %r\" % (cents_field,))\n        cents = int(cents_field)\n        prior = seen.get(event_id)\n        if prior is not None:\n            prev_account, prev_cents = prior\n            if prev_account != account or prev_cents != cents:\n                raise ValueError(\"conflicting duplicate event id %r\" % (event_id,))\n            continue\n        seen[event_id] = (account, cents)\n        totals[account] = totals.get(account, 0) + cents\n    return totals\n",
    "kind": "FileEditorObservation"
  },
  "action_id": "d2591e21-e3ab-4a79-8848-761470c112c0",
  "extended_content": [],
  "kind": "ObservationEvent"
}

Tool request: terminal

{
  "command": "cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'\nimport sys, types, shutil, os\n\nref = types.ModuleType(\"codec\")\ndef encode(fields):\n    return \"|\".join(f.replace(\"\\\\\",\"\\\\\\\\\").replace(\"|\",\"\\\\|\") for f in fields)\ndef decode(line):\n    fields=[]; cur=[]; i=0; n=len(line)\n    while i<n:\n        c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\n# import real reducer from disk\nsys.path.insert(0, os.getcwd())\nimport importlib, reducer\nimportlib.reload(reducer)\nsummarize = reducer.summarize\n\nP=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueError\")\n    else: F.append(name); print(\"FAIL\", name, \"got\", repr(got), \"want\", repr(want))\n\ndef raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n        P.append(name); print(\"PASS\", name, \"-> ValueError\")\n        return\n    except Exception as e:\n        F.append(name); print(\"FAIL\", name, \"raised wrong\", type(e).__name__, e); return\n    F.append(name); print(\"FAIL\", name, \"no exception\")\n\n# 1\ncheck(\"1 empty\", summarize([]), {})\n# 2\ncheck(\"2 single\", summarize([\"e1|acct|10\"]), {\"acct\":10})\n# 3\ncheck(\"3 sum zero retained\", summarize([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\":0})\n# 4\ncheck(\"4 empty account+id\", summarize([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\":12,\"x\":9})\n# 5 escaped\ncheck(\"5 escape\", summarize([encode([\"a\\\\b\",\"North|South\",\"-100\"])]), {\"North|South\":-100})\n# 6\ncheck(\"6 lead zeros\", summarize([\"e|x|0007\"]), {\"x\":7})\nraises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u0661\\u0662\"]))\n# 7 cents validation\ncheck(\"7 ok5\", summarize([\"e|x|5\"]), {\"x\":5})\ncheck(\"7 ok-5\", summarize([\"e|x|-5\"]), {\"x\":-5})\nfor txt in [\"\",\"+5\",\"5.0\",\"x\",\"5 \"]:\n    raises(\"7 bad %r\"%txt, lambda t=txt: summarize([\"e|x|\"+t]))\n# 8 field count\nraises(\"8 two fields\", lambda: summarize([\"a|b\"]))\nraises(\"8 four fields\", lambda: summarize([\"a|b|c|d\"]))\nraises(\"8 bad escape\", lambda: summarize([\"a\\\\x|b|c\"]))\n# 9 exact retransmission\ncheck(\"9 retrans\", summarize([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\":10})\n# 10 conflicts\nraises(\"10a id diff acct\", lambda: summarize([\"e|x|10\",\"e|y|10\"]))\nraises(\"10b sign conflict\", lambda: summarize([\"e|x|10\",\"e|x|-10\"]))\ncheck(\"10c same num\", summarize([\"e|x|5\",\"e|x|05\"]), {\"x\":5})\nraises(\"10d diff cents\", lambda: summarize([\"e|x|10\",\"e|x|7\"]))\n# 11 immutability\nlst=[\"e|x|10\",\"e2|y|3\"]; snap=lst[:]; summarize(lst)\ncheck(\"11 immutable\", lst, snap)\n# 12 iterable + newlines\ncheck(\"12 gen\", summarize((l for l in [\"e|x|10\"])), {\"x\":10})\ncheck(\"12 lf\", summarize([\"e|x|10\\n\"]), {\"x\":10})\ncheck(\"12 crlf\", summarize([\"e|x|10\\r\\n\"]), {\"x\":10})\ncheck(\"12 embedded\", summarize([\"e|x|10\\n\",\"e2|x|5\\r\\n\",\"e3|x|-15\"]), {\"x\":0})\nprint(\"\\n%d passed, %d failed\" % (len(P), len(F)))\nEOF",
  "is_input": false,
  "reset": false,
  "kind": "TerminalAction"
}

Full event evidence

{
  "id": "b7f61509-2c69-4e14-b507-749ca675e52f",
  "timestamp": "2026-10-18T20:22:37.046862",
  "source": "agent",
  "parent_id": "a896a047-292a-4aef-84b6-57e2d8888a4e",
  "thought": [],
  "reasoning_content": null,
  "thinking_blocks": [],
  "action": {
    "command": "cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'\nimport sys, types, shutil, os\n\nref = types.ModuleType(\"codec\")\ndef encode(fields):\n    return \"|\".join(f.replace(\"\\\\\",\"\\\\\\\\\").replace(\"|\",\"\\\\|\") for f in fields)\ndef decode(line):\n    fields=[]; cur=[]; i=0; n=len(line)\n    while i<n:\n        c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\n# import real reducer from disk\nsys.path.insert(0, os.getcwd())\nimport importlib, reducer\nimportlib.reload(reducer)\nsummarize = reducer.summarize\n\nP=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueError\")\n    else: F.append(name); print(\"FAIL\", name, \"got\", repr(got), \"want\", repr(want))\n\ndef raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n        P.append(name); print(\"PASS\", name, \"-> ValueError\")\n        return\n    except Exception as e:\n        F.append(name); print(\"FAIL\", name, \"raised wrong\", type(e).__name__, e); return\n    F.append(name); print(\"FAIL\", name, \"no exception\")\n\n# 1\ncheck(\"1 empty\", summarize([]), {})\n# 2\ncheck(\"2 single\", summarize([\"e1|acct|10\"]), {\"acct\":10})\n# 3\ncheck(\"3 sum zero retained\", summarize([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\":0})\n# 4\ncheck(\"4 empty account+id\", summarize([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\":12,\"x\":9})\n# 5 escaped\ncheck(\"5 escape\", summarize([encode([\"a\\\\b\",\"North|South\",\"-100\"])]), {\"North|South\":-100})\n# 6\ncheck(\"6 lead zeros\", summarize([\"e|x|0007\"]), {\"x\":7})\nraises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u0661\\u0662\"]))\n# 7 cents validation\ncheck(\"7 ok5\", summarize([\"e|x|5\"]), {\"x\":5})\ncheck(\"7 ok-5\", summarize([\"e|x|-5\"]), {\"x\":-5})\nfor txt in [\"\",\"+5\",\"5.0\",\"x\",\"5 \"]:\n    raises(\"7 bad %r\"%txt, lambda t=txt: summarize([\"e|x|\"+t]))\n# 8 field count\nraises(\"8 two fields\", lambda: summarize([\"a|b\"]))\nraises(\"8 four fields\", lambda: summarize([\"a|b|c|d\"]))\nraises(\"8 bad escape\", lambda: summarize([\"a\\\\x|b|c\"]))\n# 9 exact retransmission\ncheck(\"9 retrans\", summarize([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\":10})\n# 10 conflicts\nraises(\"10a id diff acct\", lambda: summarize([\"e|x|10\",\"e|y|10\"]))\nraises(\"10b sign conflict\", lambda: summarize([\"e|x|10\",\"e|x|-10\"]))\ncheck(\"10c same num\", summarize([\"e|x|5\",\"e|x|05\"]), {\"x\":5})\nraises(\"10d diff cents\", lambda: summarize([\"e|x|10\",\"e|x|7\"]))\n# 11 immutability\nlst=[\"e|x|10\",\"e2|y|3\"]; snap=lst[:]; summarize(lst)\ncheck(\"11 immutable\", lst, snap)\n# 12 iterable + newlines\ncheck(\"12 gen\", summarize((l for l in [\"e|x|10\"])), {\"x\":10})\ncheck(\"12 lf\", summarize([\"e|x|10\\n\"]), {\"x\":10})\ncheck(\"12 crlf\", summarize([\"e|x|10\\r\\n\"]), {\"x\":10})\ncheck(\"12 embedded\", summarize([\"e|x|10\\n\",\"e2|x|5\\r\\n\",\"e3|x|-15\"]), {\"x\":0})\nprint(\"\\n%d passed, %d failed\" % (len(P), len(F)))\nEOF",
    "is_input": false,
    "reset": false,
    "kind": "TerminalAction"
  },
  "tool_name": "terminal",
  "tool_call_id": "call_b9ea4cbdd7744b5d8d3688e5",
  "tool_call": {
    "id": "call_b9ea4cbdd7744b5d8d3688e5",
    "name": "terminal",
    "arguments": "{\"command\": \"cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'\\nimport sys, types, shutil, os\\n\\nref = types.ModuleType(\\\"codec\\\")\\ndef encode(fields):\\n    return \\\"|\\\".join(f.replace(\\\"\\\\\\\\\\\",\\\"\\\\\\\\\\\\\\\\\\\").replace(\\\"|\\\",\\\"\\\\\\\\|\\\") for f in fields)\\ndef decode(line):\\n    fields=[]; cur=[]; i=0; n=len(line)\\n    while i<n:\\n        c=line[i]\\n        if c==\\\"|\\\":\\n            fields.append(\\\"\\\".join(cur)); cur=[]; i+=1\\n        elif c==\\\"\\\\\\\\\\\":\\n            if i+1>=n: raise ValueError(\\\"trailing backslash\\\")\\n            nxt=line[i+1]\\n            if nxt==\\\"\\\\\\\\\\\": cur.append(\\\"\\\\\\\\\\\"); i+=2\\n            elif nxt==\\\"|\\\": cur.append(\\\"|\\\"); i+=2\\n            else: raise ValueError(\\\"invalid escape\\\")\\n        else:\\n            cur.append(c); i+=1\\n    fields.append(\\\"\\\".join(cur)); return fields\\nref.decode = decode\\nsys.modules[\\\"codec\\\"] = ref\\n# import real reducer from disk\\nsys.path.insert(0, os.getcwd())\\nimport importlib, reducer\\nimportlib.reload(reducer)\\nsummarize = reducer.summarize\\n\\nP=[]; F=[]\\ndef check(name, got, want):\\n    if got==want: P.append(name); print(\\\"PASS\\\", name, \\\"->\\\", got if not isinstance(got, ValueError) else \\\"ValueError\\\")\\n    else: F.append(name); print(\\\"FAIL\\\", name, \\\"got\\\", repr(got), \\\"want\\\", repr(want))\\n\\ndef raises(name, fn, msg=True):\\n    try:\\n        fn()\\n    except ValueError as e:\\n        P.append(name); print(\\\"PASS\\\", name, \\\"-> ValueError\\\")\\n        return\\n    except Exception as e:\\n        F.append(name); print(\\\"FAIL\\\", name, \\\"raised wrong\\\", type(e).__name__, e); return\\n    F.append(name); print(\\\"FAIL\\\", name, \\\"no exception\\\")\\n\\n# 1\\ncheck(\\\"1 empty\\\", summarize([]), {})\\n# 2\\ncheck(\\\"2 single\\\", summarize([\\\"e1|acct|10\\\"]), {\\\"acct\\\":10})\\n# 3\\ncheck(\\\"3 sum zero retained\\\", summarize([\\\"a1|x|5\\\",\\\"a2|x|3\\\",\\\"a3|x|-8\\\"]), {\\\"x\\\":0})\\n# 4\\ncheck(\\\"4 empty account+id\\\", summarize([\\\"e0||5\\\",\\\"e1||7\\\",\\\"|x|9\\\"]), {\\\"\\\":12,\\\"x\\\":9})\\n# 5 escaped\\ncheck(\\\"5 escape\\\", summarize([encode([\\\"a\\\\\\\\b\\\",\\\"North|South\\\",\\\"-100\\\"])]), {\\\"North|South\\\":-100})\\n# 6\\ncheck(\\\"6 lead zeros\\\", summarize([\\\"e|x|0007\\\"]), {\\\"x\\\":7})\\nraises(\\\"6b unicode cents\\\", lambda: summarize([\\\"e|x|\\\\u0661\\\\u0662\\\"]))\\n# 7 cents validation\\ncheck(\\\"7 ok5\\\", summarize([\\\"e|x|5\\\"]), {\\\"x\\\":5})\\ncheck(\\\"7 ok-5\\\", summarize([\\\"e|x|-5\\\"]), {\\\"x\\\":-5})\\nfor txt in [\\\"\\\",\\\"+5\\\",\\\"5.0\\\",\\\"x\\\",\\\"5 \\\"]:\\n    raises(\\\"7 bad %r\\\"%txt, lambda t=txt: summarize([\\\"e|x|\\\"+t]))\\n# 8 field count\\nraises(\\\"8 two fields\\\", lambda: summarize([\\\"a|b\\\"]))\\nraises(\\\"8 four fields\\\", lambda: summarize([\\\"a|b|c|d\\\"]))\\nraises(\\\"8 bad escape\\\", lambda: summarize([\\\"a\\\\\\\\x|b|c\\\"]))\\n# 9 exact retransmission\\ncheck(\\\"9 retrans\\\", summarize([\\\"e|x|10\\\",\\\"e|x|10\\\",\\\"e|x|010\\\"]), {\\\"x\\\":10})\\n# 10 conflicts\\nraises(\\\"10a id diff acct\\\", lambda: summarize([\\\"e|x|10\\\",\\\"e|y|10\\\"]))\\nraises(\\\"10b sign conflict\\\", lambda: summarize([\\\"e|x|10\\\",\\\"e|x|-10\\\"]))\\ncheck(\\\"10c same num\\\", summarize([\\\"e|x|5\\\",\\\"e|x|05\\\"]), {\\\"x\\\":5})\\nraises(\\\"10d diff cents\\\", lambda: summarize([\\\"e|x|10\\\",\\\"e|x|7\\\"]))\\n# 11 immutability\\nlst=[\\\"e|x|10\\\",\\\"e2|y|3\\\"]; snap=lst[:]; summarize(lst)\\ncheck(\\\"11 immutable\\\", lst, snap)\\n# 12 iterable + newlines\\ncheck(\\\"12 gen\\\", summarize((l for l in [\\\"e|x|10\\\"])), {\\\"x\\\":10})\\ncheck(\\\"12 lf\\\", summarize([\\\"e|x|10\\\\n\\\"]), {\\\"x\\\":10})\\ncheck(\\\"12 crlf\\\", summarize([\\\"e|x|10\\\\r\\\\n\\\"]), {\\\"x\\\":10})\\ncheck(\\\"12 embedded\\\", summarize([\\\"e|x|10\\\\n\\\",\\\"e2|x|5\\\\r\\\\n\\\",\\\"e3|x|-15\\\"]), {\\\"x\\\":0})\\nprint(\\\"\\\\n%d passed, %d failed\\\" % (len(P), len(F)))\\nEOF\", \"security_risk\": \"MEDIUM\", \"summary\": \"Run in-memory probe suite against summarize\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792372946-Con7VME2mn2rarcbfsUb",
  "security_risk": "UNKNOWN",
  "summary": "Run in-memory probe suite against summarize",
  "kind": "ActionEvent"
}

Tool result: terminal

cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'
import sys, types, shutil, os

ref = types.ModuleType("codec")
def encode(fields):
    return "|".join(f.replace("\\","\\\\").replace("|","\\|") for f in fields)
def decode(line):
    fields=[]; cur=[]; i=0; n=len(line)
    while i<n:
        c=line[i]
        if c=="|":
            fields.append("".join(cur)); cur=[]; i+=1
        elif c=="\\":
            if i+1>=n: raise ValueError("trailing backslash")
            nxt=line[i+1]
            if nxt=="\\": cur.append("\\"); i+=2
            elif nxt=="|": cur.append("|"); i+=2
            else: raise ValueError("invalid escape")
        else:
            cur.append(c); i+=1
    fields.append("".join(cur)); return fields
ref.decode = decode
sys.modules["codec"] = ref
# import real reducer from disk
sys.path.insert(0, os.getcwd())
import importlib, reducer
importlib.reload(reducer)
summarize = reducer.summarize

P=[]; F=[]
def check(name, got, want):
    if got==want: P.append(name); print("PASS", name, "->", got if not isinstance(got, ValueError) else "ValueEr
ref = types.ModuleType("codec")
def encode(fields):
    return "|".join(f.replace("\\","\\\\").replace("|","\\|") for f in fields)
def decode(line):
    fields=[]; cur=[]; i=0; n=len(line)
    while i<n:
        c=line[i]
        if c=="|":
            fields.append("".join(cur)); cur=[]; i+=1
        elif c=="\\":
            if i+1>=n: raise ValueError("trailing backslash")
            nxt=line[i+1]
            if nxt=="\\": cur.append("\\"); i+=2
            elif nxt=="|": cur.append("|"); i+=2
            else: raise ValueError("invalid escape")
        else:
            cur.append(c); i+=1
    fields.append("".join(cur)); return fields
ref.decode = decode
sys.modules["codec"] = ref
# import real reducer from disk
sys.path.insert(0, os.getcwd())
import importlib, reducer
importlib.reload(reducer)
summarize = reducer.summarize

P=[]; F=[]
def check(name, got, want):
    if got==want: P.append(name); print("PASS", name, "->", got if not isinstance(got, ValueError) else "ValueError")
    else: F.append(namdef encode(fields):
    return "|".join(f.replace("\\","\\\\").replace("|","\\|") for f in fields)
def decode(line):
    fields=[]; cur=[]; i=0; n=len(line)
    while i<n:
        c=line[i]
        if c=="|":
            fields.append("".join(cur)); cur=[]; i+=1
        elif c=="\\":
            if i+1>=n: raise ValueError("trailing backslash")
            nxt=line[i+1]
            if nxt=="\\": cur.append("\\"); i+=2
            elif nxt=="|": cur.append("|"); i+=2
            else: raise ValueError("invalid escape")
        else:
            cur.append(c); i+=1
    fields.append("".join(cur)); return fields
ref.decode = decode
sys.modules["codec"] = ref
# import real reducer from disk
sys.path.insert(0, os.getcwd())
import importlib, reducer
importlib.reload(reducer)
summarize = reducer.summarize

P=[]; F=[]
def check(name, got, want):
    if got==want: P.append(name); print("PASS", name, "->", got if not isinstance(got, ValueError) else "ValueError")
    else: F.append(name)    else: F.append(name)    erepr(got), "want", repr(want))

def raises(name, fn, msg=True):
    try:
        fn()
    except ValueError as e:
                    while i<n:
        c=line[i]
        if c=="|":
            fields.append("".join(cur)); cur=[]; i+=1
        elif c=="\\":
            if i+1>=n: raise ValueError("trailing backslash")
            nxt=line[i+1]
            if nxt=="\\": cur.append("\\"); i+=2
            elif nxt=="|": cur.append("|"); i+=2
            else: raise ValueError("invalid escape")
        else:
            cur.append(c); i+=1
    fields.append("".join(cur)); return fields
ref.decode = decode
sys.modules["codec"] = ref
# import real reducer from disk
sys.path.insert(0, os.getcwd())
import importlib, reducer
importlib.reload(reducer)
summarize = reducer.summarize

P=[]; F=[]
def check(name, got, want):
    if got==want: P.append(name); print("PASS", name, "->", got if not isinstance(got, ValueError) else "ValueError")
    else: F.append(name)    else: F.append(name)    erepr(got), "want", repr(want))

def raises(name, fn, msg=True):
    try:
        fn()
    except ValueError as e:
                                     c=line[i]
        if c=="|":
            fields.append("".join(cur)); cur=[]; i+=1
        elif c=="\\":
            if i+1>=n: raise ValueError("trailing backslash")
            nxt=line[i+1]
            if nxt=="\\": cur.append("\\"); i+=2
            elif nxt=="|": cur.append("|"); i+=2
            else: raise ValueError("invalid escape")
        else:
            cur.append(c); i+=1
    fields.append("".join(cur)); return fields
ref.decode = decode
sys.modules["codec"] = ref
# import real reducer from disk
sys.path.insert(0, os.getcwd())
import importlib, reducer
importlib.reload(reducer)
summarize = reducer.summarize

P=[]; F=[]
def check(name, got, want):
    if got==want: P.append(name); print("PASS", name, "->", got if not isinstance(got, ValueError) else "ValueError")
    else: F.append(name)    else: F.append(name)    erepr(got), "want", repr(want))

def raises(name, fn, msg=True):
    try:
        fn()
    except ValueError as e:
                                            "-             )
        return
    except Exception as e:
        F.append(name); print("FAIL", name, "raised wrong", type(e).__name__, e); return
    F.append(name); print("FAIL", name, "no exception")

# 1
check("1 check("1 check("1 ch            elif nxt=="|": cur.append("|"); i+=2
            else: raise ValueError("invalid escape")
        else:
            cur.append(c); i+=1
    fields.append("".join(cur)); return fields
ref.decode = decode
sys.modules["codec"] = ref
# import real reducer from disk
sys.path.insert(0, os.getcwd())
import importlib, reducer
importlib.reload(reducer)
summarize = reducer.summarize

P=[]; F=[]
def check(name, got, want):
    if got==want: P.append(name); print("PASS", name, "->", got if not isinstance(got, ValueError) else "ValueError")
    else: F.append(name)    else: F.append(name)    erepr(got), "want", repr(want))

def raises(name, fn, msg=True):
    try:
        fn()
    except ValueError as e:
                                            "-             )
        return
    except Exception as e:
        F.append(name); print("FAIL", name, "raised wrong", type(e).__name__, e); return
    F.append(name); print("FAIL", name, "no exception")

# 1
check("1 check("1 check("1 check("1 check("1 check("1 e", summarize(["e1|acct|10"]), {"acct":10})
# 3
check("3 sum zero retained",             cur.append(c); i+=1
    fields.append("".join(cur)); return fields
ref.decode = decode
sys.modules["codec"] = ref
# import real reducer from disk
sys.path.insert(0, os.getcwd())
import importlib, reducer
importlib.reload(reducer)
summarize = reducer.summarize

P=[]; F=[]
def check(name, got, want):
    if got==want: P.append(name); print("PASS", name, "->", got if not isinstance(got, ValueError) else "ValueError")
    else: F.append(name)    else: F.append(name)    erepr(got), "want", repr(want))

def raises(name, fn, msg=True):
    try:
        fn()
    except ValueError as e:
                                            "-             )
        return
    except Exception as e:
        F.append(name); print("FAIL", name, "raised wrong", type(e).__name__, e); return
    F.append(name); print("FAIL", name, "no exception")

# 1
check("1 check("1 check("1 check("1 check("1 check("1 e", summarize(["e1|acct|10"]), {"acct":10})
# 3
check("3 sum zero retained", summarize(["a1|x|5","a2|x|3","a3|x|-8"]), {"x":0})
# 4
check("4 empty account+id", summarize(["e0||5","e1||7","|x|9"]), {"":12,"x":9})
# 5 escaped
check("5 escape", sumsys.path.insert(0, os.getcwd())
import importlib, reducer
importlib.reload(reducer)
summarize = reducer.summarize

P=[]; F=[]
def check(name, got, want):
    if got==want: P.append(name); print("PASS", name, "->", got if not isinstance(got, ValueError) else "ValueError")
    else: F.append(name)    else: F.append(name)    erepr(got), "want", repr(want))

def raises(name, fn, msg=True):
    try:
        fn()
    except ValueError as e:
                                            "-             )
        return
    except Exception as e:
        F.append(name); print("FAIL", name, "raised wrong", type(e).__name__, e); return
    F.append(name); print("FAIL", name, "no exception")

# 1
check("1 check("1 check("1 check("1 check("1 check("1 e", summarize(["e1|acct|10"]), {"acct":10})
# 3
check("3 sum zero retained", summarize(["a1|x|5","a2|x|3","a3|x|-8"]), {"x":0})
# 4
check("4 empty account+id", summarize(["e0||5","e1||7","|x|9"]), {"":12,"x":9})
# 5 escaped
check("5 escape", summcheck("5 escape", summcheck("5outh","-100"])]), {"North|South":-100})
# 6
check("6 lead zeros", summarize(["e|x|0007"]), P=[]; F=[]
def check(name, got, want):
    if got==want: P.append(name); print("PASS", name, "->", got if not isinstance(got, ValueError) else "ValueError")
    else: F.append(name)    else: F.append(name)    erepr(got), "want", repr(want))

def raises(name, fn, msg=True):
    try:
        fn()
    except ValueError as e:
                                            "-             )
        return
    except Exception as e:
        F.append(name); print("FAIL", name, "raised wrong", type(e).__name__, e); return
    F.append(name); print("FAIL", name, "no exception")

# 1
check("1 check("1 check("1 check("1 check("1 check("1 e", summarize(["e1|acct|10"]), {"acct":10})
# 3
check("3 sum zero retained", summarize(["a1|x|5","a2|x|3","a3|x|-8"]), {"x":0})
# 4
check("4 empty account+id", summarize(["e0||5","e1||7","|x|9"]), {"":12,"x":9})
# 5 escaped
check("5 escape", summcheck("5 escape", summcheck("5outh","-100"])]), {"North|South":-100})
# 6
check("6 lead zeros", summarize(["e|x|0007"]), {"x":7})
raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summa    else: F.append(name)    else: F.append(name)    erepr(got), "want", repr(want))

def raises(name, fn, msg=True):
    try:
        fn()
    except ValueError as e:
                                            "-             )
        return
    except Exception as e:
        F.append(name); print("FAIL", name, "raised wrong", type(e).__name__, e); return
    F.append(name); print("FAIL", name, "no exception")

# 1
check("1 check("1 check("1 check("1 check("1 check("1 e", summarize(["e1|acct|10"]), {"acct":10})
# 3
check("3 sum zero retained", summarize(["a1|x|5","a2|x|3","a3|x|-8"]), {"x":0})
# 4
check("4 empty account+id", summarize(["e0||5","e1||7","|x|9"]), {"":12,"x":9})
# 5 escaped
check("5 escape", summcheck("5 escape", summcheck("5outh","-100"])]), {"North|South":-100})
# 6
check("6 lead zeros", summarize(["e|x|0007"]), {"x":7})
raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066rais, {"x":-5})
for txt in ["","+5","5.0","x","5 "]:
    raises("7 def raises(name, fn, msg=True):
    try:
        fn()
    except ValueError as e:
                                            "-             )
        return
    except Exception as e:
        F.append(name); print("FAIL", name, "raised wrong", type(e).__name__, e); return
    F.append(name); print("FAIL", name, "no exception")

# 1
check("1 check("1 check("1 check("1 check("1 check("1 e", summarize(["e1|acct|10"]), {"acct":10})
# 3
check("3 sum zero retained", summarize(["a1|x|5","a2|x|3","a3|x|-8"]), {"x":0})
# 4
check("4 empty account+id", summarize(["e0||5","e1||7","|x|9"]), {"":12,"x":9})
# 5 escaped
check("5 escape", summcheck("5 escape", summcheck("5outh","-100"])]), {"North|South":-100})
# 6
check("6 lead zeros", summarize(["e|x|0007"]), {"x":7})
raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066rais, {"x":-5})
for txt in ["","+5","5.0","x","5 "]:
    raises("7 bad %r"%txt, lambda t=txt: summarize(["e|x|"+t]))
# 8 field count
raises("8 two fields", lambda: summarizeraises("8 two fields", lambda: summarizera        return
    except Exception as e:
        F.append(name); print("FAIL", name, "raised wrong", type(e).__name__, e); return
    F.append(name); print("FAIL", name, "no exception")

# 1
check("1 check("1 check("1 check("1 check("1 check("1 e", summarize(["e1|acct|10"]), {"acct":10})
# 3
check("3 sum zero retained", summarize(["a1|x|5","a2|x|3","a3|x|-8"]), {"x":0})
# 4
check("4 empty account+id", summarize(["e0||5","e1||7","|x|9"]), {"":12,"x":9})
# 5 escaped
check("5 escape", summcheck("5 escape", summcheck("5outh","-100"])]), {"North|South":-100})
# 6
check("6 lead zeros", summarize(["e|x|0007"]), {"x":7})
raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066rais, {"x":-5})
for txt in ["","+5","5.0","x","5 "]:
    raises("7 bad %r"%txt, lambda t=txt: summarize(["e|x|"+t]))
# 8 field count
raises("8 two fields", lambda: summarizeraises("8 two fields", lambda: summarizeraises("8 two fiel|c|d"]))
raises("8 bad escape", lambda: summarize(["a\\x|b|c"]))
# 9 exact retransmission
check("9 retrans", summarize(["e|x|10","e|x|10","e|x|010"]), {"x":10})
# 10 confl# 1
check("1 check("1 check("1 check("1 check("1 check("1 e", summarize(["e1|acct|10"]), {"acct":10})
# 3
check("3 sum zero retained", summarize(["a1|x|5","a2|x|3","a3|x|-8"]), {"x":0})
# 4
check("4 empty account+id", summarize(["e0||5","e1||7","|x|9"]), {"":12,"x":9})
# 5 escaped
check("5 escape", summcheck("5 escape", summcheck("5outh","-100"])]), {"North|South":-100})
# 6
check("6 lead zeros", summarize(["e|x|0007"]), {"x":7})
raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066rais, {"x":-5})
for txt in ["","+5","5.0","x","5 "]:
    raises("7 bad %r"%txt, lambda t=txt: summarize(["e|x|"+t]))
# 8 field count
raises("8 two fields", lambda: summarizeraises("8 two fields", lambda: summarizeraises("8 two fiel|c|d"]))
raises("8 bad escape", lambda: summarize(["a\\x|b|c"]))
# 9 exact retransmission
check("9 retrans", summarize(["e|x|10","e|x|10","e|x|010"]), {"x":10})
# 10 conflicts
raises("10a id diff acct", lambda: summarize(["e|x|10","e|y|10"]))
raises("10b sign conflict", lambda: summarize(["e|x|10","e|x|-10"]))
check("10c same num", summarize(["e|x|5","e|x|05"]), check("4 empty account+id", summarize(["e0||5","e1||7","|x|9"]), {"":12,"x":9})
# 5 escaped
check("5 escape", summcheck("5 escape", summcheck("5outh","-100"])]), {"North|South":-100})
# 6
check("6 lead zeros", summarize(["e|x|0007"]), {"x":7})
raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066rais, {"x":-5})
for txt in ["","+5","5.0","x","5 "]:
    raises("7 bad %r"%txt, lambda t=txt: summarize(["e|x|"+t]))
# 8 field count
raises("8 two fields", lambda: summarizeraises("8 two fields", lambda: summarizeraises("8 two fiel|c|d"]))
raises("8 bad escape", lambda: summarize(["a\\x|b|c"]))
# 9 exact retransmission
check("9 retrans", summarize(["e|x|10","e|x|10","e|x|010"]), {"x":10})
# 10 conflicts
raises("10a id diff acct", lambda: summarize(["e|x|10","e|y|10"]))
raises("10b sign conflict", lambda: summarize(["e|x|10","e|x|-10"]))
check("10c same num", summarize(["e|x|5","e|x|05"]), {"x":5})
raises("10d diff cents", lambda: summarize(["e|x|10","e|x|7"]))
# 11 immutability
lst=["e|x|10","e2|y|3"]; snap=lst[:]; summarize(lst)
check("11 immutable", lst, snap)
# 12 check("6 lead zeros", summarize(["e|x|0007"]), {"x":7})
raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066raises("6b unicode cents", lambda: summarize(["e|x|\u066rais, {"x":-5})
for txt in ["","+5","5.0","x","5 "]:
    raises("7 bad %r"%txt, lambda t=txt: summarize(["e|x|"+t]))
# 8 field count
raises("8 two fields", lambda: summarizeraises("8 two fields", lambda: summarizeraises("8 two fiel|c|d"]))
raises("8 bad escape", lambda: summarize(["a\\x|b|c"]))
# 9 exact retransmission
check("9 retrans", summarize(["e|x|10","e|x|10","e|x|010"]), {"x":10})
# 10 conflicts
raises("10a id diff acct", lambda: summarize(["e|x|10","e|y|10"]))
raises("10b sign conflict", lambda: summarize(["e|x|10","e|x|-10"]))
check("10c same num", summarize(["e|x|5","e|x|05"]), {"x":5})
raises("10d diff cents", lambda: summarize(["e|x|10","e|x|7"]))
# 11 immutability
lst=["e|x|10","e2|y|3"]; snap=lst[:]; summarize(lst)
check("11 immutable", lst, snap)
# 12 iterable + newlines
check("12 gen", summarize((l for l in ["e|x|10"])), {"x":10})
check("12 lf", summarize(["e|x|10\n"]), {"x":10})
check("12 crlf", summarize(["e|x|10\r\n"]), {"x":10})
check("12 embedded", summarize(["e|x|10\n","e2|x|5\r\n","e3|x|-15"]), {"x":0check("12 embedde    raises("7 bad %r"%txt, lambda t=txt: summarize(["e|x|"+t]))
# 8 field count
raises("8 two fields", lambda: summarizeraises("8 two fields", lambda: summarizeraises("8 two fiel|c|d"]))
raises("8 bad escape", lambda: summarize(["a\\x|b|c"]))
# 9 exact retransmission
check("9 retrans", summarize(["e|x|10","e|x|10","e|x|010"]), {"x":10})
# 10 conflicts
raises("10a id diff acct", lambda: summarize(["e|x|10","e|y|10"]))
raises("10b sign conflict", lambda: summarize(["e|x|10","e|x|-10"]))
check("10c same num", summarize(["e|x|5","e|x|05"]), {"x":5})
raises("10d diff cents", lambda: summarize(["e|x|10","e|x|7"]))
# 11 immutability
lst=["e|x|10","e2|y|3"]; snap=lst[:]; summarize(lst)
check("11 immutable", lst, snap)
# 12 iterable + newlines
check("12 gen", summarize((l for l in ["e|x|10"])), {"x":10})
check("12 lf", summarize(["e|x|10\n"]), {"x":10})
check("12 crlf", summarize(["e|x|10\r\n"]), {"x":10})
check("12 embedded", summarize(["e|x|10\n","e2|x|5\r\n","e3|x|-15"]), {"x":0check("12 embedded", summarize(["e| (len(P), len(F)))
EOF
check("9 retrans", summarize(["e|x|10","e|x|10","e|x|010"]), {"x":10})
# 10 conflicts
raises("10a id diff acct", lambda: summarize(["e|x|10","e|y|10"]))
raises("10b sign conflict", lambda: summarize(["e|x|10","e|x|-10"]))
check("10c same num", summarize(["e|x|5","e|x|05"]), {"x":5})
raises("10d diff cents", lambda: summarize(["e|x|10","e|x|7"]))
# 11 immutability
lst=["e|x|10","e2|y|3"]; snap=lst[:]; summarize(lst)
check("11 immutable", lst, snap)
# 12 iterable + newlines
check("12 gen", summarize((l for l in ["e|x|10"])), {"x":10})
check("12 lf", summarize(["e|x|10\n"]), {"x":10})
check("12 crlf", summarize(["e|x|10\r\n"]), {"x":10})
check("12 embedded", summarize(["e|x|10\n","e2|x|5\r\n","e3|x|-15"]), {"x":0check("12 embedded", summarize(["e| (len(P), len(F)))
EOF
check("10c same num", summarize(["e|x|5","e|x|05"]), {"x":5})
raises("10d diff cents", lambda: summarize(["e|x|10","e|x|7"]))
# 11 immutability
lst=["e|x|10","e2|y|3"]; snap=lst[:]; summarize(lst)
check("11 immutable", lst, snap)
# 12 iterable + newlines
check("12 gen", summarize((l for l in ["e|x|10"])), {"x":10})
check("12 lf", summarize(["e|x|10\n"]), {"x":10})
check("12 crlf", summarize(["e|x|10\r\n"]), {"x":10})
check("12 embedded", summarize(["e|x|10\n","e2|x|5\r\n","e3|x|-15"]), {"x":0check("12 embedded", summarize(["e| (len(P), len(F)))
EOF
  File "<stdin>", line 32
    else: F.append(name)    else: F.append(name)    erepr(got), "want", repr(want))
                                                                                  ^
SyntaxError: unmatched ')'

Full event evidence

{
  "id": "d5a9b812-e567-4691-ad6a-753ce9c5df49",
  "timestamp": "2026-10-18T20:22:37.828727",
  "source": "environment",
  "parent_id": "b7f61509-2c69-4e14-b507-749ca675e52f",
  "tool_name": "terminal",
  "tool_call_id": "call_b9ea4cbdd7744b5d8d3688e5",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'\nimport sys, types, shutil, os\n\nref = types.ModuleType(\"codec\")\ndef encode(fields):\n    return \"|\".join(f.replace(\"\\\\\",\"\\\\\\\\\").replace(\"|\",\"\\\\|\") for f in fields)\ndef decode(line):\n    fields=[]; cur=[]; i=0; n=len(line)\n    while i<n:\n        c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\n# import real reducer from disk\nsys.path.insert(0, os.getcwd())\nimport importlib, reducer\nimportlib.reload(reducer)\nsummarize = reducer.summarize\n\nP=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueEr\nref = types.ModuleType(\"codec\")\ndef encode(fields):\n    return \"|\".join(f.replace(\"\\\\\",\"\\\\\\\\\").replace(\"|\",\"\\\\|\") for f in fields)\ndef decode(line):\n    fields=[]; cur=[]; i=0; n=len(line)\n    while i<n:\n        c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\n# import real reducer from disk\nsys.path.insert(0, os.getcwd())\nimport importlib, reducer\nimportlib.reload(reducer)\nsummarize = reducer.summarize\n\nP=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueError\")\n    else: F.append(namdef encode(fields):\n    return \"|\".join(f.replace(\"\\\\\",\"\\\\\\\\\").replace(\"|\",\"\\\\|\") for f in fields)\ndef decode(line):\n    fields=[]; cur=[]; i=0; n=len(line)\n    while i<n:\n        c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\n# import real reducer from disk\nsys.path.insert(0, os.getcwd())\nimport importlib, reducer\nimportlib.reload(reducer)\nsummarize = reducer.summarize\n\nP=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueError\")\n    else: F.append(name)    else: F.append(name)    erepr(got), \"want\", repr(want))\n\ndef raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n                    while i<n:\n        c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\n# import real reducer from disk\nsys.path.insert(0, os.getcwd())\nimport importlib, reducer\nimportlib.reload(reducer)\nsummarize = reducer.summarize\n\nP=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueError\")\n    else: F.append(name)    else: F.append(name)    erepr(got), \"want\", repr(want))\n\ndef raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n                                     c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\n# import real reducer from disk\nsys.path.insert(0, os.getcwd())\nimport importlib, reducer\nimportlib.reload(reducer)\nsummarize = reducer.summarize\n\nP=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueError\")\n    else: F.append(name)    else: F.append(name)    erepr(got), \"want\", repr(want))\n\ndef raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n                                            \"-             )\n        return\n    except Exception as e:\n        F.append(name); print(\"FAIL\", name, \"raised wrong\", type(e).__name__, e); return\n    F.append(name); print(\"FAIL\", name, \"no exception\")\n\n# 1\ncheck(\"1 check(\"1 check(\"1 ch            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\n# import real reducer from disk\nsys.path.insert(0, os.getcwd())\nimport importlib, reducer\nimportlib.reload(reducer)\nsummarize = reducer.summarize\n\nP=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueError\")\n    else: F.append(name)    else: F.append(name)    erepr(got), \"want\", repr(want))\n\ndef raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n                                            \"-             )\n        return\n    except Exception as e:\n        F.append(name); print(\"FAIL\", name, \"raised wrong\", type(e).__name__, e); return\n    F.append(name); print(\"FAIL\", name, \"no exception\")\n\n# 1\ncheck(\"1 check(\"1 check(\"1 check(\"1 check(\"1 check(\"1 e\", summarize([\"e1|acct|10\"]), {\"acct\":10})\n# 3\ncheck(\"3 sum zero retained\",             cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\n# import real reducer from disk\nsys.path.insert(0, os.getcwd())\nimport importlib, reducer\nimportlib.reload(reducer)\nsummarize = reducer.summarize\n\nP=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueError\")\n    else: F.append(name)    else: F.append(name)    erepr(got), \"want\", repr(want))\n\ndef raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n                                            \"-             )\n        return\n    except Exception as e:\n        F.append(name); print(\"FAIL\", name, \"raised wrong\", type(e).__name__, e); return\n    F.append(name); print(\"FAIL\", name, \"no exception\")\n\n# 1\ncheck(\"1 check(\"1 check(\"1 check(\"1 check(\"1 check(\"1 e\", summarize([\"e1|acct|10\"]), {\"acct\":10})\n# 3\ncheck(\"3 sum zero retained\", summarize([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\":0})\n# 4\ncheck(\"4 empty account+id\", summarize([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\":12,\"x\":9})\n# 5 escaped\ncheck(\"5 escape\", sumsys.path.insert(0, os.getcwd())\nimport importlib, reducer\nimportlib.reload(reducer)\nsummarize = reducer.summarize\n\nP=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueError\")\n    else: F.append(name)    else: F.append(name)    erepr(got), \"want\", repr(want))\n\ndef raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n                                            \"-             )\n        return\n    except Exception as e:\n        F.append(name); print(\"FAIL\", name, \"raised wrong\", type(e).__name__, e); return\n    F.append(name); print(\"FAIL\", name, \"no exception\")\n\n# 1\ncheck(\"1 check(\"1 check(\"1 check(\"1 check(\"1 check(\"1 e\", summarize([\"e1|acct|10\"]), {\"acct\":10})\n# 3\ncheck(\"3 sum zero retained\", summarize([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\":0})\n# 4\ncheck(\"4 empty account+id\", summarize([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\":12,\"x\":9})\n# 5 escaped\ncheck(\"5 escape\", summcheck(\"5 escape\", summcheck(\"5outh\",\"-100\"])]), {\"North|South\":-100})\n# 6\ncheck(\"6 lead zeros\", summarize([\"e|x|0007\"]), P=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueError\")\n    else: F.append(name)    else: F.append(name)    erepr(got), \"want\", repr(want))\n\ndef raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n                                            \"-             )\n        return\n    except Exception as e:\n        F.append(name); print(\"FAIL\", name, \"raised wrong\", type(e).__name__, e); return\n    F.append(name); print(\"FAIL\", name, \"no exception\")\n\n# 1\ncheck(\"1 check(\"1 check(\"1 check(\"1 check(\"1 check(\"1 e\", summarize([\"e1|acct|10\"]), {\"acct\":10})\n# 3\ncheck(\"3 sum zero retained\", summarize([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\":0})\n# 4\ncheck(\"4 empty account+id\", summarize([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\":12,\"x\":9})\n# 5 escaped\ncheck(\"5 escape\", summcheck(\"5 escape\", summcheck(\"5outh\",\"-100\"])]), {\"North|South\":-100})\n# 6\ncheck(\"6 lead zeros\", summarize([\"e|x|0007\"]), {\"x\":7})\nraises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summa    else: F.append(name)    else: F.append(name)    erepr(got), \"want\", repr(want))\n\ndef raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n                                            \"-             )\n        return\n    except Exception as e:\n        F.append(name); print(\"FAIL\", name, \"raised wrong\", type(e).__name__, e); return\n    F.append(name); print(\"FAIL\", name, \"no exception\")\n\n# 1\ncheck(\"1 check(\"1 check(\"1 check(\"1 check(\"1 check(\"1 e\", summarize([\"e1|acct|10\"]), {\"acct\":10})\n# 3\ncheck(\"3 sum zero retained\", summarize([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\":0})\n# 4\ncheck(\"4 empty account+id\", summarize([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\":12,\"x\":9})\n# 5 escaped\ncheck(\"5 escape\", summcheck(\"5 escape\", summcheck(\"5outh\",\"-100\"])]), {\"North|South\":-100})\n# 6\ncheck(\"6 lead zeros\", summarize([\"e|x|0007\"]), {\"x\":7})\nraises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066rais, {\"x\":-5})\nfor txt in [\"\",\"+5\",\"5.0\",\"x\",\"5 \"]:\n    raises(\"7 def raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n                                            \"-             )\n        return\n    except Exception as e:\n        F.append(name); print(\"FAIL\", name, \"raised wrong\", type(e).__name__, e); return\n    F.append(name); print(\"FAIL\", name, \"no exception\")\n\n# 1\ncheck(\"1 check(\"1 check(\"1 check(\"1 check(\"1 check(\"1 e\", summarize([\"e1|acct|10\"]), {\"acct\":10})\n# 3\ncheck(\"3 sum zero retained\", summarize([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\":0})\n# 4\ncheck(\"4 empty account+id\", summarize([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\":12,\"x\":9})\n# 5 escaped\ncheck(\"5 escape\", summcheck(\"5 escape\", summcheck(\"5outh\",\"-100\"])]), {\"North|South\":-100})\n# 6\ncheck(\"6 lead zeros\", summarize([\"e|x|0007\"]), {\"x\":7})\nraises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066rais, {\"x\":-5})\nfor txt in [\"\",\"+5\",\"5.0\",\"x\",\"5 \"]:\n    raises(\"7 bad %r\"%txt, lambda t=txt: summarize([\"e|x|\"+t]))\n# 8 field count\nraises(\"8 two fields\", lambda: summarizeraises(\"8 two fields\", lambda: summarizera        return\n    except Exception as e:\n        F.append(name); print(\"FAIL\", name, \"raised wrong\", type(e).__name__, e); return\n    F.append(name); print(\"FAIL\", name, \"no exception\")\n\n# 1\ncheck(\"1 check(\"1 check(\"1 check(\"1 check(\"1 check(\"1 e\", summarize([\"e1|acct|10\"]), {\"acct\":10})\n# 3\ncheck(\"3 sum zero retained\", summarize([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\":0})\n# 4\ncheck(\"4 empty account+id\", summarize([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\":12,\"x\":9})\n# 5 escaped\ncheck(\"5 escape\", summcheck(\"5 escape\", summcheck(\"5outh\",\"-100\"])]), {\"North|South\":-100})\n# 6\ncheck(\"6 lead zeros\", summarize([\"e|x|0007\"]), {\"x\":7})\nraises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066rais, {\"x\":-5})\nfor txt in [\"\",\"+5\",\"5.0\",\"x\",\"5 \"]:\n    raises(\"7 bad %r\"%txt, lambda t=txt: summarize([\"e|x|\"+t]))\n# 8 field count\nraises(\"8 two fields\", lambda: summarizeraises(\"8 two fields\", lambda: summarizeraises(\"8 two fiel|c|d\"]))\nraises(\"8 bad escape\", lambda: summarize([\"a\\\\x|b|c\"]))\n# 9 exact retransmission\ncheck(\"9 retrans\", summarize([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\":10})\n# 10 confl# 1\ncheck(\"1 check(\"1 check(\"1 check(\"1 check(\"1 check(\"1 e\", summarize([\"e1|acct|10\"]), {\"acct\":10})\n# 3\ncheck(\"3 sum zero retained\", summarize([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\":0})\n# 4\ncheck(\"4 empty account+id\", summarize([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\":12,\"x\":9})\n# 5 escaped\ncheck(\"5 escape\", summcheck(\"5 escape\", summcheck(\"5outh\",\"-100\"])]), {\"North|South\":-100})\n# 6\ncheck(\"6 lead zeros\", summarize([\"e|x|0007\"]), {\"x\":7})\nraises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066rais, {\"x\":-5})\nfor txt in [\"\",\"+5\",\"5.0\",\"x\",\"5 \"]:\n    raises(\"7 bad %r\"%txt, lambda t=txt: summarize([\"e|x|\"+t]))\n# 8 field count\nraises(\"8 two fields\", lambda: summarizeraises(\"8 two fields\", lambda: summarizeraises(\"8 two fiel|c|d\"]))\nraises(\"8 bad escape\", lambda: summarize([\"a\\\\x|b|c\"]))\n# 9 exact retransmission\ncheck(\"9 retrans\", summarize([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\":10})\n# 10 conflicts\nraises(\"10a id diff acct\", lambda: summarize([\"e|x|10\",\"e|y|10\"]))\nraises(\"10b sign conflict\", lambda: summarize([\"e|x|10\",\"e|x|-10\"]))\ncheck(\"10c same num\", summarize([\"e|x|5\",\"e|x|05\"]), check(\"4 empty account+id\", summarize([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\":12,\"x\":9})\n# 5 escaped\ncheck(\"5 escape\", summcheck(\"5 escape\", summcheck(\"5outh\",\"-100\"])]), {\"North|South\":-100})\n# 6\ncheck(\"6 lead zeros\", summarize([\"e|x|0007\"]), {\"x\":7})\nraises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066rais, {\"x\":-5})\nfor txt in [\"\",\"+5\",\"5.0\",\"x\",\"5 \"]:\n    raises(\"7 bad %r\"%txt, lambda t=txt: summarize([\"e|x|\"+t]))\n# 8 field count\nraises(\"8 two fields\", lambda: summarizeraises(\"8 two fields\", lambda: summarizeraises(\"8 two fiel|c|d\"]))\nraises(\"8 bad escape\", lambda: summarize([\"a\\\\x|b|c\"]))\n# 9 exact retransmission\ncheck(\"9 retrans\", summarize([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\":10})\n# 10 conflicts\nraises(\"10a id diff acct\", lambda: summarize([\"e|x|10\",\"e|y|10\"]))\nraises(\"10b sign conflict\", lambda: summarize([\"e|x|10\",\"e|x|-10\"]))\ncheck(\"10c same num\", summarize([\"e|x|5\",\"e|x|05\"]), {\"x\":5})\nraises(\"10d diff cents\", lambda: summarize([\"e|x|10\",\"e|x|7\"]))\n# 11 immutability\nlst=[\"e|x|10\",\"e2|y|3\"]; snap=lst[:]; summarize(lst)\ncheck(\"11 immutable\", lst, snap)\n# 12 check(\"6 lead zeros\", summarize([\"e|x|0007\"]), {\"x\":7})\nraises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066raises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u066rais, {\"x\":-5})\nfor txt in [\"\",\"+5\",\"5.0\",\"x\",\"5 \"]:\n    raises(\"7 bad %r\"%txt, lambda t=txt: summarize([\"e|x|\"+t]))\n# 8 field count\nraises(\"8 two fields\", lambda: summarizeraises(\"8 two fields\", lambda: summarizeraises(\"8 two fiel|c|d\"]))\nraises(\"8 bad escape\", lambda: summarize([\"a\\\\x|b|c\"]))\n# 9 exact retransmission\ncheck(\"9 retrans\", summarize([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\":10})\n# 10 conflicts\nraises(\"10a id diff acct\", lambda: summarize([\"e|x|10\",\"e|y|10\"]))\nraises(\"10b sign conflict\", lambda: summarize([\"e|x|10\",\"e|x|-10\"]))\ncheck(\"10c same num\", summarize([\"e|x|5\",\"e|x|05\"]), {\"x\":5})\nraises(\"10d diff cents\", lambda: summarize([\"e|x|10\",\"e|x|7\"]))\n# 11 immutability\nlst=[\"e|x|10\",\"e2|y|3\"]; snap=lst[:]; summarize(lst)\ncheck(\"11 immutable\", lst, snap)\n# 12 iterable + newlines\ncheck(\"12 gen\", summarize((l for l in [\"e|x|10\"])), {\"x\":10})\ncheck(\"12 lf\", summarize([\"e|x|10\\n\"]), {\"x\":10})\ncheck(\"12 crlf\", summarize([\"e|x|10\\r\\n\"]), {\"x\":10})\ncheck(\"12 embedded\", summarize([\"e|x|10\\n\",\"e2|x|5\\r\\n\",\"e3|x|-15\"]), {\"x\":0check(\"12 embedde    raises(\"7 bad %r\"%txt, lambda t=txt: summarize([\"e|x|\"+t]))\n# 8 field count\nraises(\"8 two fields\", lambda: summarizeraises(\"8 two fields\", lambda: summarizeraises(\"8 two fiel|c|d\"]))\nraises(\"8 bad escape\", lambda: summarize([\"a\\\\x|b|c\"]))\n# 9 exact retransmission\ncheck(\"9 retrans\", summarize([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\":10})\n# 10 conflicts\nraises(\"10a id diff acct\", lambda: summarize([\"e|x|10\",\"e|y|10\"]))\nraises(\"10b sign conflict\", lambda: summarize([\"e|x|10\",\"e|x|-10\"]))\ncheck(\"10c same num\", summarize([\"e|x|5\",\"e|x|05\"]), {\"x\":5})\nraises(\"10d diff cents\", lambda: summarize([\"e|x|10\",\"e|x|7\"]))\n# 11 immutability\nlst=[\"e|x|10\",\"e2|y|3\"]; snap=lst[:]; summarize(lst)\ncheck(\"11 immutable\", lst, snap)\n# 12 iterable + newlines\ncheck(\"12 gen\", summarize((l for l in [\"e|x|10\"])), {\"x\":10})\ncheck(\"12 lf\", summarize([\"e|x|10\\n\"]), {\"x\":10})\ncheck(\"12 crlf\", summarize([\"e|x|10\\r\\n\"]), {\"x\":10})\ncheck(\"12 embedded\", summarize([\"e|x|10\\n\",\"e2|x|5\\r\\n\",\"e3|x|-15\"]), {\"x\":0check(\"12 embedded\", summarize([\"e| (len(P), len(F)))\nEOF\ncheck(\"9 retrans\", summarize([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\":10})\n# 10 conflicts\nraises(\"10a id diff acct\", lambda: summarize([\"e|x|10\",\"e|y|10\"]))\nraises(\"10b sign conflict\", lambda: summarize([\"e|x|10\",\"e|x|-10\"]))\ncheck(\"10c same num\", summarize([\"e|x|5\",\"e|x|05\"]), {\"x\":5})\nraises(\"10d diff cents\", lambda: summarize([\"e|x|10\",\"e|x|7\"]))\n# 11 immutability\nlst=[\"e|x|10\",\"e2|y|3\"]; snap=lst[:]; summarize(lst)\ncheck(\"11 immutable\", lst, snap)\n# 12 iterable + newlines\ncheck(\"12 gen\", summarize((l for l in [\"e|x|10\"])), {\"x\":10})\ncheck(\"12 lf\", summarize([\"e|x|10\\n\"]), {\"x\":10})\ncheck(\"12 crlf\", summarize([\"e|x|10\\r\\n\"]), {\"x\":10})\ncheck(\"12 embedded\", summarize([\"e|x|10\\n\",\"e2|x|5\\r\\n\",\"e3|x|-15\"]), {\"x\":0check(\"12 embedded\", summarize([\"e| (len(P), len(F)))\nEOF\ncheck(\"10c same num\", summarize([\"e|x|5\",\"e|x|05\"]), {\"x\":5})\nraises(\"10d diff cents\", lambda: summarize([\"e|x|10\",\"e|x|7\"]))\n# 11 immutability\nlst=[\"e|x|10\",\"e2|y|3\"]; snap=lst[:]; summarize(lst)\ncheck(\"11 immutable\", lst, snap)\n# 12 iterable + newlines\ncheck(\"12 gen\", summarize((l for l in [\"e|x|10\"])), {\"x\":10})\ncheck(\"12 lf\", summarize([\"e|x|10\\n\"]), {\"x\":10})\ncheck(\"12 crlf\", summarize([\"e|x|10\\r\\n\"]), {\"x\":10})\ncheck(\"12 embedded\", summarize([\"e|x|10\\n\",\"e2|x|5\\r\\n\",\"e3|x|-15\"]), {\"x\":0check(\"12 embedded\", summarize([\"e| (len(P), len(F)))\nEOF\n  File \"<stdin>\", line 32\n    else: F.append(name)    else: F.append(name)    erepr(got), \"want\", repr(want))\n                                                                                  ^\nSyntaxError: unmatched ')'"
      }
    ],
    "is_error": false,
    "command": "cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'\nimport sys, types, shutil, os\n\nref = types.ModuleType(\"codec\")\ndef encode(fields):\n    return \"|\".join(f.replace(\"\\\\\",\"\\\\\\\\\").replace(\"|\",\"\\\\|\") for f in fields)\ndef decode(line):\n    fields=[]; cur=[]; i=0; n=len(line)\n    while i<n:\n        c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\n# import real reducer from disk\nsys.path.insert(0, os.getcwd())\nimport importlib, reducer\nimportlib.reload(reducer)\nsummarize = reducer.summarize\n\nP=[]; F=[]\ndef check(name, got, want):\n    if got==want: P.append(name); print(\"PASS\", name, \"->\", got if not isinstance(got, ValueError) else \"ValueError\")\n    else: F.append(name); print(\"FAIL\", name, \"got\", repr(got), \"want\", repr(want))\n\ndef raises(name, fn, msg=True):\n    try:\n        fn()\n    except ValueError as e:\n        P.append(name); print(\"PASS\", name, \"-> ValueError\")\n        return\n    except Exception as e:\n        F.append(name); print(\"FAIL\", name, \"raised wrong\", type(e).__name__, e); return\n    F.append(name); print(\"FAIL\", name, \"no exception\")\n\n# 1\ncheck(\"1 empty\", summarize([]), {})\n# 2\ncheck(\"2 single\", summarize([\"e1|acct|10\"]), {\"acct\":10})\n# 3\ncheck(\"3 sum zero retained\", summarize([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\":0})\n# 4\ncheck(\"4 empty account+id\", summarize([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\":12,\"x\":9})\n# 5 escaped\ncheck(\"5 escape\", summarize([encode([\"a\\\\b\",\"North|South\",\"-100\"])]), {\"North|South\":-100})\n# 6\ncheck(\"6 lead zeros\", summarize([\"e|x|0007\"]), {\"x\":7})\nraises(\"6b unicode cents\", lambda: summarize([\"e|x|\\u0661\\u0662\"]))\n# 7 cents validation\ncheck(\"7 ok5\", summarize([\"e|x|5\"]), {\"x\":5})\ncheck(\"7 ok-5\", summarize([\"e|x|-5\"]), {\"x\":-5})\nfor txt in [\"\",\"+5\",\"5.0\",\"x\",\"5 \"]:\n    raises(\"7 bad %r\"%txt, lambda t=txt: summarize([\"e|x|\"+t]))\n# 8 field count\nraises(\"8 two fields\", lambda: summarize([\"a|b\"]))\nraises(\"8 four fields\", lambda: summarize([\"a|b|c|d\"]))\nraises(\"8 bad escape\", lambda: summarize([\"a\\\\x|b|c\"]))\n# 9 exact retransmission\ncheck(\"9 retrans\", summarize([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\":10})\n# 10 conflicts\nraises(\"10a id diff acct\", lambda: summarize([\"e|x|10\",\"e|y|10\"]))\nraises(\"10b sign conflict\", lambda: summarize([\"e|x|10\",\"e|x|-10\"]))\ncheck(\"10c same num\", summarize([\"e|x|5\",\"e|x|05\"]), {\"x\":5})\nraises(\"10d diff cents\", lambda: summarize([\"e|x|10\",\"e|x|7\"]))\n# 11 immutability\nlst=[\"e|x|10\",\"e2|y|3\"]; snap=lst[:]; summarize(lst)\ncheck(\"11 immutable\", lst, snap)\n# 12 iterable + newlines\ncheck(\"12 gen\", summarize((l for l in [\"e|x|10\"])), {\"x\":10})\ncheck(\"12 lf\", summarize([\"e|x|10\\n\"]), {\"x\":10})\ncheck(\"12 crlf\", summarize([\"e|x|10\\r\\n\"]), {\"x\":10})\ncheck(\"12 embedded\", summarize([\"e|x|10\\n\",\"e2|x|5\\r\\n\",\"e3|x|-15\"]), {\"x\":0})\nprint(\"\\n%d passed, %d failed\" % (len(P), len(F)))\nEOF",
    "exit_code": 1,
    "timeout": false,
    "metadata": {
      "exit_code": 1,
      "pid": -1,
      "username": "instructor",
      "hostname": "workshop-host",
      "working_dir": "/private/tmp/odsc-workshop6-v2/ledger-team-t1",
      "py_interpreter_path": "/Users/instructor.shah/.cache/uv/archive-v0/cZpGatmgSZEYIeuAv16p4/bin/python",
      "prefix": "",
      "suffix": "\n[The command completed with exit code 1.]"
    },
    "full_output_save_dir": "/Users/instructor.shah/.openhands/agent-canvas/dev_conversations/6861ddb66ca44f0eba9f6c5729445fdc/subagents/d05e4664b4e246c796ec974d5f99f92a/observations",
    "kind": "TerminalObservation"
  },
  "action_id": "b7f61509-2c69-4e14-b507-749ca675e52f",
  "extended_content": [],
  "kind": "ObservationEvent"
}

Tool request: terminal

{
  "command": "cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'\nimport sys, types, os\nref = types.ModuleType(\"codec\")\ndef encode(fields):\n    return \"|\".join(f.replace(\"\\\\\",\"\\\\\\\\\").replace(\"|\",\"\\\\|\") for f in fields)\ndef decode(line):\n    fields=[]; cur=[]; i=0; n=len(line)\n    while i<n:\n        c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\nsys.path.insert(0, os.getcwd())\nimport reducer, importlib\nimportlib.reload(reducer)\nS = reducer.summarize\nok = 0; fail = 0\ndef eq(name, got, want):\n    global ok, fail\n    if got == want: ok += 1; print(\"PASS\", name, repr(got))\n    else: fail += 1; print(\"FAIL\", name, \"got\", repr(got), \"want\", repr(want))\ndef ra(name, fn):\n    global ok, fail\n    try:\n        fn()\n    except ValueError:\n        ok += 1; print(\"PASS\", name, \"ValueError\")\n        return\n    fail += 1; print(\"FAIL\", name, \"no ValueError\")\n# probes\neq(\"1 empty\", S([]), {})\neq(\"2 single\", S([\"e1|acct|10\"]), {\"acct\": 10})\neq(\"3 zero\", S([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\": 0})\neq(\"4 emptyf\", S([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\": 12, \"x\": 9})\neq(\"5 escape\", S([encode([\"a\\\\b\",\"North|South\",\"-100\"])]), {\"North|South\": -100})\neq(\"6 lead0\", S([\"e|x|0007\"]), {\"x\": 7})\nra(\"6b unicode\", lambda: S([\"e|x|\\u0661\\u0662\"]))\neq(\"7 five\", S([\"e|x|5\"]), {\"x\": 5})\neq(\"7 neg5\", S([\"e|x|-5\"]), {\"x\": -5})\nfor t in [\"\", \"+5\", \"5.0\", \"x\", \"5 \"]:\n    ra(\"7 bad %r\" % t, lambda t=t: S([\"e|x|\" + t]))\nra(\"8 two\", lambda: S([\"a|b\"]))\nra(\"8 four\", lambda: S([\"a|b|c|d\"]))\nra(\"8 esc\", lambda: S([\"a\\\\x|b|c\"]))\neq(\"9 retrans\", S([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\": 10})\nra(\"10a\", lambda: S([\"e|x|10\",\"e|y|10\"]))\nra(\"10b\", lambda: S([\"e|x|10\",\"e|x|-10\"]))\neq(\"10c\", S([\"e|x|5\",\"e|x|05\"]), {\"x\": 5})\nra(\"10d\", lambda: S([\"e|x|10\",\"e|x|7\"]))\nlst = [\"e|x|10\",\"e2|y|3\"]; snap = lst[:]; S(lst)\neq(\"11 immut\", lst, snap)\neq(\"12 gen\", S((l for l in [\"e|x|10\"])), {\"x\": 10})\neq(\"12 lf\", S([\"e|x|10\\n\"]), {\"x\": 10})\neq(\"12 crlf\", S([\"e|x|10\\r\\n\"]), {\"x\": 10})\neq(\"12 mix\", S([\"e|x|10\\n\",\"e2|x|5\\r\\n\",\"e3|x|-15\"]), {\"x\": 0})\nprint(\"TOTAL ok=%d fail=%d\" % (ok, fail))\nEOF",
  "is_input": false,
  "reset": false,
  "kind": "TerminalAction"
}

Full event evidence

{
  "id": "4039c97b-8185-4edd-a140-5e0ec8c87baf",
  "timestamp": "2026-10-18T20:22:46.869046",
  "source": "agent",
  "parent_id": "d5a9b812-e567-4691-ad6a-753ce9c5df49",
  "thought": [],
  "reasoning_content": null,
  "thinking_blocks": [],
  "action": {
    "command": "cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'\nimport sys, types, os\nref = types.ModuleType(\"codec\")\ndef encode(fields):\n    return \"|\".join(f.replace(\"\\\\\",\"\\\\\\\\\").replace(\"|\",\"\\\\|\") for f in fields)\ndef decode(line):\n    fields=[]; cur=[]; i=0; n=len(line)\n    while i<n:\n        c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\nsys.path.insert(0, os.getcwd())\nimport reducer, importlib\nimportlib.reload(reducer)\nS = reducer.summarize\nok = 0; fail = 0\ndef eq(name, got, want):\n    global ok, fail\n    if got == want: ok += 1; print(\"PASS\", name, repr(got))\n    else: fail += 1; print(\"FAIL\", name, \"got\", repr(got), \"want\", repr(want))\ndef ra(name, fn):\n    global ok, fail\n    try:\n        fn()\n    except ValueError:\n        ok += 1; print(\"PASS\", name, \"ValueError\")\n        return\n    fail += 1; print(\"FAIL\", name, \"no ValueError\")\n# probes\neq(\"1 empty\", S([]), {})\neq(\"2 single\", S([\"e1|acct|10\"]), {\"acct\": 10})\neq(\"3 zero\", S([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\": 0})\neq(\"4 emptyf\", S([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\": 12, \"x\": 9})\neq(\"5 escape\", S([encode([\"a\\\\b\",\"North|South\",\"-100\"])]), {\"North|South\": -100})\neq(\"6 lead0\", S([\"e|x|0007\"]), {\"x\": 7})\nra(\"6b unicode\", lambda: S([\"e|x|\\u0661\\u0662\"]))\neq(\"7 five\", S([\"e|x|5\"]), {\"x\": 5})\neq(\"7 neg5\", S([\"e|x|-5\"]), {\"x\": -5})\nfor t in [\"\", \"+5\", \"5.0\", \"x\", \"5 \"]:\n    ra(\"7 bad %r\" % t, lambda t=t: S([\"e|x|\" + t]))\nra(\"8 two\", lambda: S([\"a|b\"]))\nra(\"8 four\", lambda: S([\"a|b|c|d\"]))\nra(\"8 esc\", lambda: S([\"a\\\\x|b|c\"]))\neq(\"9 retrans\", S([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\": 10})\nra(\"10a\", lambda: S([\"e|x|10\",\"e|y|10\"]))\nra(\"10b\", lambda: S([\"e|x|10\",\"e|x|-10\"]))\neq(\"10c\", S([\"e|x|5\",\"e|x|05\"]), {\"x\": 5})\nra(\"10d\", lambda: S([\"e|x|10\",\"e|x|7\"]))\nlst = [\"e|x|10\",\"e2|y|3\"]; snap = lst[:]; S(lst)\neq(\"11 immut\", lst, snap)\neq(\"12 gen\", S((l for l in [\"e|x|10\"])), {\"x\": 10})\neq(\"12 lf\", S([\"e|x|10\\n\"]), {\"x\": 10})\neq(\"12 crlf\", S([\"e|x|10\\r\\n\"]), {\"x\": 10})\neq(\"12 mix\", S([\"e|x|10\\n\",\"e2|x|5\\r\\n\",\"e3|x|-15\"]), {\"x\": 0})\nprint(\"TOTAL ok=%d fail=%d\" % (ok, fail))\nEOF",
    "is_input": false,
    "reset": false,
    "kind": "TerminalAction"
  },
  "tool_name": "terminal",
  "tool_call_id": "call_ac755779d79740399ea1426e",
  "tool_call": {
    "id": "call_ac755779d79740399ea1426e",
    "name": "terminal",
    "arguments": "{\"command\": \"cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'\\nimport sys, types, os\\nref = types.ModuleType(\\\"codec\\\")\\ndef encode(fields):\\n    return \\\"|\\\".join(f.replace(\\\"\\\\\\\\\\\",\\\"\\\\\\\\\\\\\\\\\\\").replace(\\\"|\\\",\\\"\\\\\\\\|\\\") for f in fields)\\ndef decode(line):\\n    fields=[]; cur=[]; i=0; n=len(line)\\n    while i<n:\\n        c=line[i]\\n        if c==\\\"|\\\":\\n            fields.append(\\\"\\\".join(cur)); cur=[]; i+=1\\n        elif c==\\\"\\\\\\\\\\\":\\n            if i+1>=n: raise ValueError(\\\"trailing backslash\\\")\\n            nxt=line[i+1]\\n            if nxt==\\\"\\\\\\\\\\\": cur.append(\\\"\\\\\\\\\\\"); i+=2\\n            elif nxt==\\\"|\\\": cur.append(\\\"|\\\"); i+=2\\n            else: raise ValueError(\\\"invalid escape\\\")\\n        else:\\n            cur.append(c); i+=1\\n    fields.append(\\\"\\\".join(cur)); return fields\\nref.decode = decode\\nsys.modules[\\\"codec\\\"] = ref\\nsys.path.insert(0, os.getcwd())\\nimport reducer, importlib\\nimportlib.reload(reducer)\\nS = reducer.summarize\\nok = 0; fail = 0\\ndef eq(name, got, want):\\n    global ok, fail\\n    if got == want: ok += 1; print(\\\"PASS\\\", name, repr(got))\\n    else: fail += 1; print(\\\"FAIL\\\", name, \\\"got\\\", repr(got), \\\"want\\\", repr(want))\\ndef ra(name, fn):\\n    global ok, fail\\n    try:\\n        fn()\\n    except ValueError:\\n        ok += 1; print(\\\"PASS\\\", name, \\\"ValueError\\\")\\n        return\\n    fail += 1; print(\\\"FAIL\\\", name, \\\"no ValueError\\\")\\n# probes\\neq(\\\"1 empty\\\", S([]), {})\\neq(\\\"2 single\\\", S([\\\"e1|acct|10\\\"]), {\\\"acct\\\": 10})\\neq(\\\"3 zero\\\", S([\\\"a1|x|5\\\",\\\"a2|x|3\\\",\\\"a3|x|-8\\\"]), {\\\"x\\\": 0})\\neq(\\\"4 emptyf\\\", S([\\\"e0||5\\\",\\\"e1||7\\\",\\\"|x|9\\\"]), {\\\"\\\": 12, \\\"x\\\": 9})\\neq(\\\"5 escape\\\", S([encode([\\\"a\\\\\\\\b\\\",\\\"North|South\\\",\\\"-100\\\"])]), {\\\"North|South\\\": -100})\\neq(\\\"6 lead0\\\", S([\\\"e|x|0007\\\"]), {\\\"x\\\": 7})\\nra(\\\"6b unicode\\\", lambda: S([\\\"e|x|\\\\u0661\\\\u0662\\\"]))\\neq(\\\"7 five\\\", S([\\\"e|x|5\\\"]), {\\\"x\\\": 5})\\neq(\\\"7 neg5\\\", S([\\\"e|x|-5\\\"]), {\\\"x\\\": -5})\\nfor t in [\\\"\\\", \\\"+5\\\", \\\"5.0\\\", \\\"x\\\", \\\"5 \\\"]:\\n    ra(\\\"7 bad %r\\\" % t, lambda t=t: S([\\\"e|x|\\\" + t]))\\nra(\\\"8 two\\\", lambda: S([\\\"a|b\\\"]))\\nra(\\\"8 four\\\", lambda: S([\\\"a|b|c|d\\\"]))\\nra(\\\"8 esc\\\", lambda: S([\\\"a\\\\\\\\x|b|c\\\"]))\\neq(\\\"9 retrans\\\", S([\\\"e|x|10\\\",\\\"e|x|10\\\",\\\"e|x|010\\\"]), {\\\"x\\\": 10})\\nra(\\\"10a\\\", lambda: S([\\\"e|x|10\\\",\\\"e|y|10\\\"]))\\nra(\\\"10b\\\", lambda: S([\\\"e|x|10\\\",\\\"e|x|-10\\\"]))\\neq(\\\"10c\\\", S([\\\"e|x|5\\\",\\\"e|x|05\\\"]), {\\\"x\\\": 5})\\nra(\\\"10d\\\", lambda: S([\\\"e|x|10\\\",\\\"e|x|7\\\"]))\\nlst = [\\\"e|x|10\\\",\\\"e2|y|3\\\"]; snap = lst[:]; S(lst)\\neq(\\\"11 immut\\\", lst, snap)\\neq(\\\"12 gen\\\", S((l for l in [\\\"e|x|10\\\"])), {\\\"x\\\": 10})\\neq(\\\"12 lf\\\", S([\\\"e|x|10\\\\n\\\"]), {\\\"x\\\": 10})\\neq(\\\"12 crlf\\\", S([\\\"e|x|10\\\\r\\\\n\\\"]), {\\\"x\\\": 10})\\neq(\\\"12 mix\\\", S([\\\"e|x|10\\\\n\\\",\\\"e2|x|5\\\\r\\\\n\\\",\\\"e3|x|-15\\\"]), {\\\"x\\\": 0})\\nprint(\\\"TOTAL ok=%d fail=%d\\\" % (ok, fail))\\nEOF\", \"security_risk\": \"MEDIUM\", \"summary\": \"Run in-memory probe suite against summarize\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792372958-mwOW6KGII7XCqfvCSteW",
  "security_risk": "UNKNOWN",
  "summary": "Run in-memory probe suite against summarize",
  "kind": "ActionEvent"
}

Tool result: terminal

cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'
import sys, types, os
ref = types.ModuleType("codec")
def encode(fields):
    return "|".join(f.replace("\\","\\\\").replace("|","\\|") for f in fields)
def decode(line):
    fields=[]; cur=[]; i=0; n=len(line)
    while i<n:
        c=line[i]
        if c=="|":
            fields.append("".join(cur)); cur=[]; i+=1
        elif c=="\\":
            if i+1>=n: raise ValueError("trailing backslash")
            nxt=line[i+1]
            if nxt=="\\": cur.append("\\"); i+=2
            elif nxt=="|": cur.append("|"); i+=2
            else: raise ValueError("invalid escape")
        else:
            cur.append(c); i+=1
    fields.append("".join(cur)); return fields
ref.decode = decode
sys.modules["codec"] = ref
sys.path.insert(0, os.getcwd())
import reducer, importlib
importlib.reload(reducer)
S = reducer.summarize
ok = 0; fail = 0
def eq(name, got, want):
    global ok, fail
    if got == want: ok += 1; print("PASS", name, repr(got))
    else: fail += 1; print("FAIL", name, "got", repr(got), "want", repr(want))
def ra(name, fn):
    global ok, fail
    try:
        fn()
    except ValueError:
        ok += 1; print("PASS", name, "ValueError")
        return
    fail += 1; print("FAIL", name, "no ValueError")
# probes
eq("1 empty", S([]), {})
eq("2 single", S(["e1|acct|10"]), {"acct": 10})
eq("3 zero", S(["a1|x|5","a2|x|3","a3|x|-8"]), {"x": 0})
eq("4 emptyf", S(["e0||5","e1||7","|x|9"]), {"": 12, "x": 9})
eq("5 escape", S([encode(["a\\b","North|South","-100"])]), {"North|South": -100})
eq("6 lead0", S(["e|x|0007"]), {"x": 7})
ra("6b unicode", lambda: S(["e|x|\u0661\u0662"]))
eq("7 five", S(["e|x|5"]), {"x": 5})
eq("7 neg5", S(["e|x|-5"]), {"x": -5})
for t in ["", "+5", "5.0", "x", "5 "]:
    ra("7 bad %r" % t, lambda t=t: S(["e|x|" + t]))
ra("8 two", lambda: S(["a|b"]))
ra("8 four", lambda: S(["a|b|c|d"]))
ra("8 esc", lambda: S(["a\\x|b|c"]))
eq("9 retran    if got == want: ok += 1; print("PASS", name, repr(got))
    else: fail += 1; print("FAIL", name, "got", repr(got), "want", repr(want))
def ra(name, fn):
    global ok, fail
    try:
        fn()
    except ValueError:
        ok += 1; print("PASS", name, "ValueError")
        return
    fail += 1; print("FAIL", name, "no ValueError")
# probes
eq("1 empty", S([]), {})
eq("2 single", S(["e1|acct|10"]), {"acct": 10})
eq("3 zero", S(["a1|x|5","a2|x|3","a3|x|-8"]), {"x": 0})
eq("4 emptyf", S(["e0||5","e1||7","|x|9"]), {"": 12, "x": 9})
eq("5 escape", S([encode(["a\\b","North|South","-100"])]), {"North|South": -100})
eq("6 lead0", S(["e|x|0007"]), {"x": 7})
ra("6b unicode", lambda: S(["e|x|\u0661\u0662"]))
eq("7 five", S(["e|x|5"]), {"x": 5})
eq("7 neg5", S(["e|x|-5"]), {"x": -5})
for t in ["", "+5", "5.0", "x", "5 "]:
    ra("7 bad %r" % t, lambda t=t: S(["e|x|" + t]))
ra("8 two", lambda: S(["a|b"]))
ra("8 four", lambda: S(["a|b|c|d"]))
ra("8 esc", lambda: S(["a\\x|b|c"]))
eq("9 retrans", Seq("9 retrans", Se","e|x|010"]), {"x": 10})
ra("10a", lambda: S(["e|x|10","e|y|10"]))
ra("10b", lambda: S(["e|x|10","e|x|-10"]))
eq("10c", S(["e|x|5","e|x|05"]), {"x": 5})
ra("10d", lambda: S(["e|x|10","e|x|7"]))
lst = ["e|x|10","e2|y|3"]; snap = lst[:]; S(lst)
eq("11 immut", lst, snap)
eq("12 gen", S((l for l in ["e|x|10"])), {"x": 10})
eq("12 lf", S(["e|x|10\n"]), {"x": 10})
eq("12 crlf", S(["e|x|10\r\n"]), {"x": 10})
eq("12 mix", S(["e|x|10\n","e2|x|5\r\n","e3|x|-15"]), {"x": 0})
print("TOTAL ok=%d fail=%d" % (ok, fail))
EOF
  File "<stdin>", line 54
    eq("9 retrans", Seq("9 retrans", Se","e|x|010"]), {"x": 10})
                                              ^
SyntaxError: leading zeros in decimal integer literals are not permitted; use an 0o prefix for octal integers

Full event evidence

{
  "id": "3e53fc45-3cbe-40c5-b8ca-a414ed2617eb",
  "timestamp": "2026-10-18T20:22:47.660838",
  "source": "environment",
  "parent_id": "4039c97b-8185-4edd-a140-5e0ec8c87baf",
  "tool_name": "terminal",
  "tool_call_id": "call_ac755779d79740399ea1426e",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'\nimport sys, types, os\nref = types.ModuleType(\"codec\")\ndef encode(fields):\n    return \"|\".join(f.replace(\"\\\\\",\"\\\\\\\\\").replace(\"|\",\"\\\\|\") for f in fields)\ndef decode(line):\n    fields=[]; cur=[]; i=0; n=len(line)\n    while i<n:\n        c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\nsys.path.insert(0, os.getcwd())\nimport reducer, importlib\nimportlib.reload(reducer)\nS = reducer.summarize\nok = 0; fail = 0\ndef eq(name, got, want):\n    global ok, fail\n    if got == want: ok += 1; print(\"PASS\", name, repr(got))\n    else: fail += 1; print(\"FAIL\", name, \"got\", repr(got), \"want\", repr(want))\ndef ra(name, fn):\n    global ok, fail\n    try:\n        fn()\n    except ValueError:\n        ok += 1; print(\"PASS\", name, \"ValueError\")\n        return\n    fail += 1; print(\"FAIL\", name, \"no ValueError\")\n# probes\neq(\"1 empty\", S([]), {})\neq(\"2 single\", S([\"e1|acct|10\"]), {\"acct\": 10})\neq(\"3 zero\", S([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\": 0})\neq(\"4 emptyf\", S([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\": 12, \"x\": 9})\neq(\"5 escape\", S([encode([\"a\\\\b\",\"North|South\",\"-100\"])]), {\"North|South\": -100})\neq(\"6 lead0\", S([\"e|x|0007\"]), {\"x\": 7})\nra(\"6b unicode\", lambda: S([\"e|x|\\u0661\\u0662\"]))\neq(\"7 five\", S([\"e|x|5\"]), {\"x\": 5})\neq(\"7 neg5\", S([\"e|x|-5\"]), {\"x\": -5})\nfor t in [\"\", \"+5\", \"5.0\", \"x\", \"5 \"]:\n    ra(\"7 bad %r\" % t, lambda t=t: S([\"e|x|\" + t]))\nra(\"8 two\", lambda: S([\"a|b\"]))\nra(\"8 four\", lambda: S([\"a|b|c|d\"]))\nra(\"8 esc\", lambda: S([\"a\\\\x|b|c\"]))\neq(\"9 retran    if got == want: ok += 1; print(\"PASS\", name, repr(got))\n    else: fail += 1; print(\"FAIL\", name, \"got\", repr(got), \"want\", repr(want))\ndef ra(name, fn):\n    global ok, fail\n    try:\n        fn()\n    except ValueError:\n        ok += 1; print(\"PASS\", name, \"ValueError\")\n        return\n    fail += 1; print(\"FAIL\", name, \"no ValueError\")\n# probes\neq(\"1 empty\", S([]), {})\neq(\"2 single\", S([\"e1|acct|10\"]), {\"acct\": 10})\neq(\"3 zero\", S([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\": 0})\neq(\"4 emptyf\", S([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\": 12, \"x\": 9})\neq(\"5 escape\", S([encode([\"a\\\\b\",\"North|South\",\"-100\"])]), {\"North|South\": -100})\neq(\"6 lead0\", S([\"e|x|0007\"]), {\"x\": 7})\nra(\"6b unicode\", lambda: S([\"e|x|\\u0661\\u0662\"]))\neq(\"7 five\", S([\"e|x|5\"]), {\"x\": 5})\neq(\"7 neg5\", S([\"e|x|-5\"]), {\"x\": -5})\nfor t in [\"\", \"+5\", \"5.0\", \"x\", \"5 \"]:\n    ra(\"7 bad %r\" % t, lambda t=t: S([\"e|x|\" + t]))\nra(\"8 two\", lambda: S([\"a|b\"]))\nra(\"8 four\", lambda: S([\"a|b|c|d\"]))\nra(\"8 esc\", lambda: S([\"a\\\\x|b|c\"]))\neq(\"9 retrans\", Seq(\"9 retrans\", Se\",\"e|x|010\"]), {\"x\": 10})\nra(\"10a\", lambda: S([\"e|x|10\",\"e|y|10\"]))\nra(\"10b\", lambda: S([\"e|x|10\",\"e|x|-10\"]))\neq(\"10c\", S([\"e|x|5\",\"e|x|05\"]), {\"x\": 5})\nra(\"10d\", lambda: S([\"e|x|10\",\"e|x|7\"]))\nlst = [\"e|x|10\",\"e2|y|3\"]; snap = lst[:]; S(lst)\neq(\"11 immut\", lst, snap)\neq(\"12 gen\", S((l for l in [\"e|x|10\"])), {\"x\": 10})\neq(\"12 lf\", S([\"e|x|10\\n\"]), {\"x\": 10})\neq(\"12 crlf\", S([\"e|x|10\\r\\n\"]), {\"x\": 10})\neq(\"12 mix\", S([\"e|x|10\\n\",\"e2|x|5\\r\\n\",\"e3|x|-15\"]), {\"x\": 0})\nprint(\"TOTAL ok=%d fail=%d\" % (ok, fail))\nEOF\n  File \"<stdin>\", line 54\n    eq(\"9 retrans\", Seq(\"9 retrans\", Se\",\"e|x|010\"]), {\"x\": 10})\n                                              ^\nSyntaxError: leading zeros in decimal integer literals are not permitted; use an 0o prefix for octal integers"
      }
    ],
    "is_error": false,
    "command": "cd /private/tmp/odsc-workshop6-v2/ledger-team-t1 && PYTHONDONTWRITEBYTECODE=1 python3 - <<'EOF'\nimport sys, types, os\nref = types.ModuleType(\"codec\")\ndef encode(fields):\n    return \"|\".join(f.replace(\"\\\\\",\"\\\\\\\\\").replace(\"|\",\"\\\\|\") for f in fields)\ndef decode(line):\n    fields=[]; cur=[]; i=0; n=len(line)\n    while i<n:\n        c=line[i]\n        if c==\"|\":\n            fields.append(\"\".join(cur)); cur=[]; i+=1\n        elif c==\"\\\\\":\n            if i+1>=n: raise ValueError(\"trailing backslash\")\n            nxt=line[i+1]\n            if nxt==\"\\\\\": cur.append(\"\\\\\"); i+=2\n            elif nxt==\"|\": cur.append(\"|\"); i+=2\n            else: raise ValueError(\"invalid escape\")\n        else:\n            cur.append(c); i+=1\n    fields.append(\"\".join(cur)); return fields\nref.decode = decode\nsys.modules[\"codec\"] = ref\nsys.path.insert(0, os.getcwd())\nimport reducer, importlib\nimportlib.reload(reducer)\nS = reducer.summarize\nok = 0; fail = 0\ndef eq(name, got, want):\n    global ok, fail\n    if got == want: ok += 1; print(\"PASS\", name, repr(got))\n    else: fail += 1; print(\"FAIL\", name, \"got\", repr(got), \"want\", repr(want))\ndef ra(name, fn):\n    global ok, fail\n    try:\n        fn()\n    except ValueError:\n        ok += 1; print(\"PASS\", name, \"ValueError\")\n        return\n    fail += 1; print(\"FAIL\", name, \"no ValueError\")\n# probes\neq(\"1 empty\", S([]), {})\neq(\"2 single\", S([\"e1|acct|10\"]), {\"acct\": 10})\neq(\"3 zero\", S([\"a1|x|5\",\"a2|x|3\",\"a3|x|-8\"]), {\"x\": 0})\neq(\"4 emptyf\", S([\"e0||5\",\"e1||7\",\"|x|9\"]), {\"\": 12, \"x\": 9})\neq(\"5 escape\", S([encode([\"a\\\\b\",\"North|South\",\"-100\"])]), {\"North|South\": -100})\neq(\"6 lead0\", S([\"e|x|0007\"]), {\"x\": 7})\nra(\"6b unicode\", lambda: S([\"e|x|\\u0661\\u0662\"]))\neq(\"7 five\", S([\"e|x|5\"]), {\"x\": 5})\neq(\"7 neg5\", S([\"e|x|-5\"]), {\"x\": -5})\nfor t in [\"\", \"+5\", \"5.0\", \"x\", \"5 \"]:\n    ra(\"7 bad %r\" % t, lambda t=t: S([\"e|x|\" + t]))\nra(\"8 two\", lambda: S([\"a|b\"]))\nra(\"8 four\", lambda: S([\"a|b|c|d\"]))\nra(\"8 esc\", lambda: S([\"a\\\\x|b|c\"]))\neq(\"9 retrans\", S([\"e|x|10\",\"e|x|10\",\"e|x|010\"]), {\"x\": 10})\nra(\"10a\", lambda: S([\"e|x|10\",\"e|y|10\"]))\nra(\"10b\", lambda: S([\"e|x|10\",\"e|x|-10\"]))\neq(\"10c\", S([\"e|x|5\",\"e|x|05\"]), {\"x\": 5})\nra(\"10d\", lambda: S([\"e|x|10\",\"e|x|7\"]))\nlst = [\"e|x|10\",\"e2|y|3\"]; snap = lst[:]; S(lst)\neq(\"11 immut\", lst, snap)\neq(\"12 gen\", S((l for l in [\"e|x|10\"])), {\"x\": 10})\neq(\"12 lf\", S([\"e|x|10\\n\"]), {\"x\": 10})\neq(\"12 crlf\", S([\"e|x|10\\r\\n\"]), {\"x\": 10})\neq(\"12 mix\", S([\"e|x|10\\n\",\"e2|x|5\\r\\n\",\"e3|x|-15\"]), {\"x\": 0})\nprint(\"TOTAL ok=%d fail=%d\" % (ok, fail))\nEOF",
    "exit_code": 1,
    "timeout": false,
    "metadata": {
      "exit_code": 1,
      "pid": -1,
      "username": "instructor",
      "hostname": "workshop-host",
      "working_dir": "/private/tmp/odsc-workshop6-v2/ledger-team-t1",
      "py_interpreter_path": "/Users/instructor.shah/.cache/uv/archive-v0/cZpGatmgSZEYIeuAv16p4/bin/python",
      "prefix": "",
      "suffix": "\n[The command completed with exit code 1.]"
    },
    "full_output_save_dir": "/Users/instructor.shah/.openhands/agent-canvas/dev_conversations/6861ddb66ca44f0eba9f6c5729445fdc/subagents/d05e4664b4e246c796ec974d5f99f92a/observations",
    "kind": "TerminalObservation"
  },
  "action_id": "4039c97b-8185-4edd-a140-5e0ec8c87baf",
  "extended_content": [],
  "kind": "ObservationEvent"
}

Child evidence d05e4664b4e246c796ec974d5f99f92a

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ConversationErrorEvent