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ROLLOUT 5 · callowayproject/bump-my-version

callowayproject__bump-my-version-180

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453 stotal time
18tool calls
18model calls
5,895tokens generated
180,938prompt tokens read

Empty agent patch

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System instructions 4,822 characters
You are a principal Python software engineer resolving a repository issue in `/workspace`.
Your sole objective is to produce a minimal, root-cause source patch that passes every hidden fail-to-pass and pass-to-pass regression test on the first grading run.

## Critical Environment & Grader Rules
1. **Air-Gapped Sandbox & Available CLI Tools**: No network access. Never run `pip`, `uv`, `conda`, or `git fetch`. Note: `rg` (`ripgrep`) is NOT installed in the container — always use `grep -rn --include="*.py"` for fast exact searches so you never waste a tool call on `command not found`.
2. **Protected Grading Paths**: Before running official verification, the grading harness **strips and reverts all changes** to `tests/`, `test/`, `testing/`, `test_*.py`, `*_test.py`, `conftest.py`, `pyproject.toml`, `setup.cfg`, `pytest.ini`, and `tox.ini`. Every part of your fix MUST reside in non-test production source files.
3. **Untracked File Trap (`git add -N .`)**: `submit_patch` stages ALL untracked files inside `/workspace`! Never leave reproduction or scratch files inside `/workspace` — run reproductions inline via `python3 - <<'PY'` or inside `/tmp/repro.py` in a single `run_command`.
4. **Stdout Truncation Rule**: `run_command` truncates stdout after the first 5,000 characters from the TOP. Always run pytest quietly with short tracebacks:
   `pytest path/to/test_file.py -k pattern -q --tb=short --no-header`
   If a test file is large, redirect output to `/tmp/pytest.log` and inspect `tail -n 80 /tmp/pytest.log` so failure tracebacks at the bottom are never cut off.
5. **Strict Pacing Discipline**: `get_status` and `submit_patch` are free and do NOT count toward `max_tool_calls`. Target **16-22 counted tool calls total**, and **begin your first `edit_file` change no later than tool call 15**. Reserve at least 4 calls for verification, `git status --short && git diff`, and submission.

## Execution Protocol

### Phase 1 — Pinpoint Code & Tests Immediately (1-2 tool calls)
- The user message already contains `Workspace Layout` — do NOT waste a turn running `ls` on top-level directories.
- Run a single compound `run_command` with `grep -rn --include="*.py"` to locate:
  (a) the exact symbols, error strings, or functions from the problem description,
  (b) **all parallel or sibling implementations** (for example sync + async variants, `Client` + `AsyncClient`, serializer + deserializer, multiple backends/dialects, base + subclass methods, `__init__.py` / `__all__` exports), and
  (c) the closest existing unit test files under `tests/`.

### Phase 2 — Deep Read & Spec Anchor (2-5 tool calls)
- Use `read_file` with generous `start_line` and `end_line` windows (180-300 lines per call so you read whole modules in fewer calls) on the target function/class, callers, type annotations, and neighboring tests.
- Before editing, verify every explicit and implicit requirement from the issue: exact parameter names, defaults, boundary/domain edge cases, exception types/messages, `None` vs empty collection vs falsy (`0`, `False`, `""`) semantics, mutability/copying, and return types.

### Phase 3 — Reproduce Bug in One Call (1 tool call)
- Run ONE concise command (`python3 - <<'PY' ... PY` or targeted `pytest ... -q --tb=short --no-header`) via `run_command` to observe the exact pre-fix failure. Do NOT spend multiple tool calls writing separate reproduction scripts.

### Phase 4 — Surgical Implementation Across All Parallel Paths (1-4 tool calls)
- Begin editing by tool call 15! Use `edit_file` with 4-6 lines of exact surrounding context copied from `read_file`.
- Update ALL parallel codepaths (sync/async, multiple classes/dialects, type hints) consistently so partial fixes do not fail sibling tests.
- **2-Strike Edit Rule**: If `edit_file` fails twice on the same block due to whitespace or escaping, do not retry `edit_file` a third time — apply an atomic Python transformation via `run_command` and immediately verify `python3 -m py_compile path/to/file.py`.

### Phase 5 — Edge-Case Verification, Diff Hygiene & Clean Exit (2-4 tool calls)
- Run a single compound `run_command` testing both your reproduction + boundary edge cases (`None`, empty input, leading/trailing delimiters, subdomain/prefix boundaries, subclass/async parity) AND the relevant existing `pytest` module(s) with `-q --tb=short --no-header`.
- Run `git status --short && git diff` via `run_command`. Confirm:
  - ZERO untracked (`??`) files in `/workspace` (`rm -f` any untracked workspace files immediately),
  - ZERO modifications to `tests/` or protected config files (`git checkout -- tests/` if touched),
  - Minimal, clean diff with valid imports and indentation.
- Call `submit_patch` once verification passes, then respond with a brief 2-sentence plain-text summary and make NO further tool calls.
Task prompt 3,755 characters
You are evaluating a software engineering task for repository callowayproject/bump-my-version.

Problem Statement:
Zero-padded version parts are not working
              It seems that this fix was removed with some refactoring happened in #112. Tried with version 0.20.1 and the following config parameters:
```
current_version = "5.06.0"
parse = "(?P<major>\\d+)\\.(?P<minor>\\d+)\\.(?P<patch>\\d+)"
serialize = ["{major}.{minor:02}.{patch}"]
search = "{current_version}"
replace = "{new_version}"
```
Increasing minor would result in version 5.70.0 which is obviously wrong. Any chances we get this functionality back? Or is there any other possibility to have fixed length version numbers?

_Originally posted by @reindlt in https://github.com/callowayproject/bump-my-version/issues/26#issuecomment-2071756686_
            

## Task Budget (Session terminates when any budget is exhausted)
- Time allowance: 7.5 minutes
- Tool calls allowance: 30 calls
- Max loop iterations: 40 turns

## Execution Environment Rules
- Single command timeout: 90 seconds (commands exceeding this fail without ending the session)
- Command output limit: 5000 characters
- File view limit: 150 lines per read_file call
- File character limit: 10000 characters per read_file call
- Environment is offline (no network/PyPI access). All repository and test dependencies are ALREADY pre-installed. Do NOT attempt to run pip install or download packages.

## Instructions:
0. All source code is under `/workspace`. Do NOT search outside `/workspace` (e.g. `/usr/`, `/wheels/`, system site-packages). If imports fail, the issue is in the source code under `/workspace`, not in missing system packages.
1. Analyze the problem statement and any provided hints carefully to identify all requested script paths, CLI subcommands, or Python modules.
2. Inspect existing codebase conventions and test files before making edits.
3. Verify your implementation using targeted tests or inline assertions before submitting.
4. Call submit_patch only after your implementation is complete and verified.
5. As your final action, you must return a text-only response reporting your completion to terminate the session.
## Workspace Layout
The repository is located at `/workspace`. Here is the directory tree (up to 3 levels):
```
./CHANGELOG.md
./CODEOWNERS
./CODE_OF_CONDUCT.md
./CONTRIBUTING.md
./LICENSE
./MANIFEST.in
./Makefile
./README.md
./bumpversion
./bumpversion/__init__.py
./bumpversion/__main__.py
./bumpversion/aliases.py
./bumpversion/autocast.py
./bumpversion/bump.py
./bumpversion/cli.py
./bumpversion/config
./bumpversion/config/__init__.py
./bumpversion/config/create.py
./bumpversion/config/files.py
./bumpversion/config/files_legacy.py
./bumpversion/config/models.py
./bumpversion/config/utils.py
./bumpversion/context.py
./bumpversion/exceptions.py
./bumpversion/files.py
./bumpversion/indented_logger.py
./bumpversion/scm.py
./bumpversion/show.py
./bumpversion/ui.py
./bumpversion/utils.py
./bumpversion/version_part.py
./bumpversion/versioning
./bumpversion/versioning/__init__.py
./bumpversion/versioning/conventions.py
./bumpversion/versioning/functions.py
./bumpversion/versioning/models.py
./bumpversion/versioning/serialization.py
./bumpversion/visualize.py
./bumpversion/yaml_dump.py
./docs
./mkdocs.yml
./overrides
./overrides/mkdocstrings
./overrides/mkdocstrings/python
./overrides/partials
./overrides/partials/comments.html
./pyproject.toml
./requirements
./requirements.txt
./requirements/dev.txt
./requirements/docs.txt
./requirements/prod.txt
./requirements/test.txt
./tests
./tools
./tools/bump.sh
./tools/create-release.sh
./tools/drawioexport.py
./tools/gen-codeowners.sh
./tools/generate-requirements.sh
./tools/update_frontmatter.py
```
Turn 1at 37 s477 tokens out3,093 prompt tokens
The user is reporting a bug where zero-padded version parts are not working.
Specifically, with `current_version = "5.06.0"` and `serialize = ["{major}.{minor:02}.{patch}"]`, increasing the minor version is expected to result in `5.07.0` (or something similar), but it results in `5.70.0` (wait, the issue says "Increasing minor would result in version 5.70.0 which is obviously wrong", but `06` + 1 should be `07`). Actually, if it's `5.06.0` and we increase minor, it should be `5.07.0`. If it becomes `5.70.0`, that's weird. Maybe they meant `5.06.0` becomes `5.7.0` but with `02` padding it becomes `5.07.0`? No, they said "Increasing minor would result in version 5.70.0". Wait, maybe they meant `5.6.0` becomes `5.7.0` and then serialized as `5.07.0`? Let me re-read.
"current_version = '5.06.0'", "serialize = ['{major}.{minor:02}.{patch}']". Increasing minor should result in `5.07.0`. If it results in `5.70.0`, that's definitely wrong.

Let's look at where serialization happens.
`bumpversion/versioning/serialization.py` seems like a good place to start.
Also `bumpversion/version_part.py` or `bumpversion/versioning/models.py`.

Phase 1: Pinpoint Code & Tests.
I'll search for "serialize" and "format" in the codebase to see how the version is being serialized.
TOOL CALL · run_command
{
  "command": "grep -rn --include=\"*.py\" -E \"serialize|format\" bumpversion/versioning/serialization.py bumpversion/version_part.py bumpversion/versioning/models.py"
}
Result of run_command 4,139 characters
{
  "status": "ok",
  "stdout": "bumpversion/versioning/serialization.py:10:from bumpversion.utils import key_val_string, labels_for_format\nbumpversion/versioning/serialization.py:81:def serialize(version: Version, serialize_patterns: List[str], context: MutableMapping) -> str:\nbumpversion/versioning/serialization.py:83:    Attempts to serialize a version with the given serialization format.\nbumpversion/versioning/serialization.py:86:    - formats that contain all required components are preferred\nbumpversion/versioning/serialization.py:92:        version: The version to serialize\nbumpversion/versioning/serialization.py:93:        serialize_patterns: The serialization format to use, using Python's format string syntax\nbumpversion/versioning/serialization.py:100:        The serialized version as a string\nbumpversion/versioning/serialization.py:111:    for index, pattern in enumerate(serialize_patterns):\nbumpversion/versioning/serialization.py:112:        labels = set(labels_for_format(pattern))\nbumpversion/versioning/serialization.py:130:        raise FormattingError(f\"Could not find a valid serialization format in {serialize_patterns!r} for {version!r}\")\nbumpversion/versioning/serialization.py:133:    logger.debug(\"Using serialization format '%s'\", chosen_pattern)\nbumpversion/versioning/serialization.py:134:    serialized = chosen_pattern.format(**local_context)\nbumpversion/versioning/serialization.py:135:    logger.debug(\"Serialized to '%s'\", serialized)\nbumpversion/versioning/serialization.py:138:    return serialized\nbumpversion/version_part.py:9:from bumpversion.utils import labels_for_format\nbumpversion/version_part.py:11:from bumpversion.versioning.serialization import parse_version, serialize\nbumpversion/version_part.py:24:        serialize: Tuple[str],\nbumpversion/version_part.py:34:        self.serialize_formats = serialize\nbumpversion/version_part.py:42:        return f\"<bumpversion.VersionConfig:{self.parse_regex.pattern}:{self.serialize_formats}>\"\nbumpversion/version_part.py:47:            and self.serialize_formats == other.serialize_formats\nbumpversion/version_part.py:56:        Return the order of the labels in a serialization format.\nbumpversion/version_part.py:58:        Currently, order depends on the first given serialization format.\nbumpversion/version_part.py:59:        This seems like a good idea because this should be the most complete format.\nbumpversion/version_part.py:64:        return labels_for_format(self.serialize_formats[0])\nbumpversion/version_part.py:85:    def serialize(self, version: Version, context: MutableMapping) -> str:\nbumpversion/version_part.py:90:            version: The version to serialize\nbumpversion/version_part.py:94:            The serialized version as a string\nbumpversion/version_part.py:96:        return serialize(version, list(self.serialize_formats), context)\nbumpversion/versioning/models.py:31:        calver_format: Optional[str] = None,\nbumpversion/versioning/models.py:40:        self.calver_format = calver_format\nbumpversion/versioning/models.py:46:        elif calver_format:\nbumpversion/versioning/models.py:47:            self.func = CalVerFunction(calver_format)\nbumpversion/versioning/models.py:65:            calver_format=self.calver_format,\nbumpversion/versioning/models.py:92:    def __format__(self, format_spec: str) -> str:\nbumpversion/versioning/models.py:98:            return int.__format__(val, format_spec)\nbumpversion/versioning/models.py:115:    \"\"\"The possible values for the component. If it and `calver_format` is None, the component is numeric.\"\"\"\nbumpversion/versioning/models.py:133:    calver_format: Optional[str] = None\nbumpversion/versioning/models.py:134:    \"\"\"The format string for a CalVer component.\"\"\"\nbumpversion/versioning/models.py:143:        \"\"\"Set always_increment to True if calver_format is present.\"\"\"\nbumpversion/versioning/models.py:144:        if isinstance(data, dict) and data.get(\"calver_format\"):\nbumpversion/versioning/models.py:156:            calver_format=self.calver_format,\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 477 tokens · stopped: STOP
<|channel>thought The user is reporting a bug where zero-padded version parts are not working. Specifically, with `current_version = "5.06.0"` and `serialize = ["{major}.{minor:02}.{patch}"]`, increasing the minor version is expected to result in `5.07.0` (or something similar), but it results in `5.70.0` (wait, the issue says "Increasing minor would result in version 5.70.0 which is obviously wrong", but `06` + 1 should be `07`). Actually, if it's `5.06.0` and we increase minor, it should be `5.07.0`. If it becomes `5.70.0`, that's weird. Maybe they meant `5.06.0` becomes `5.7.0` but with `02` padding it becomes `5.07.0`? No, they said "Increasing minor would result in version 5.70.0". Wait, maybe they meant `5.6.0` becomes `5.7.0` and then serialized as `5.07.0`? Let me re-read. "current_version = '5.06.0'", "serialize = ['{major}.{minor:02}.{patch}']". Increasing minor should result in `5.07.0`. If it results in `5.70.0`, that's definitely wrong. Let's look at where serialization happens. `bumpversion/versioning/serialization.py` seems like a good place to start. Also `bumpversion/version_part.py` or `bumpversion/versioning/models.py`. Phase 1: Pinpoint Code & Tests. I'll search for "serialize" and "format" in the codebase to see how the version is being serialized.<channel|><|tool_call>call:run_command{command:<|"|>grep -rn --include="*.py" -E "serialize|format" bumpversion/versioning/serialization.py bumpversion/version_part.py bumpversion/versioning/models.py<|"|>}<tool_call|><|tool_response>
Turn 2at 49 s176 tokens out4,773 prompt tokens
In `bumpversion/versioning/serialization.py`:
```python
134:    serialized = chosen_pattern.format(**local_context)
```
And `bumpversion/versioning/models.py`:
```python
92:    def __format__(self, format_spec: str) -> str:
...
98:            return int.__format__(val, format_spec)
```

Wait, `bumpversion/versioning/models.py` has a `__format__` method. Let's look closer at `bumpversion/versioning/models.py` around line 92.
TOOL CALL · read_file
{
  "end_line": 120,
  "filepath": "bumpversion/versioning/models.py",
  "start_line": 70
}
Result of read_file 1,940 characters
{
  "status": "ok",
  "filepath": "bumpversion/versioning/models.py",
  "content": "    def bump(self) -> \"VersionComponent\":\n        \"\"\"Return a part with bumped value.\"\"\"\n        new_component = self.copy()\n        new_component._value = self.func.bump(self.value)\n        return new_component\n\n    def null(self) -> \"VersionComponent\":\n        \"\"\"Return a part with first value.\"\"\"\n        new_component = self.copy()\n        new_component._value = self.func.first_value\n        return new_component\n\n    @property\n    def is_optional(self) -> bool:\n        \"\"\"Is the part optional?\"\"\"\n        return self.value == self.func.optional_value\n\n    @property\n    def is_independent(self) -> bool:\n        \"\"\"Is the part independent of the other parts?\"\"\"\n        return self.independent\n\n    def __format__(self, format_spec: str) -> str:\n        try:\n            val = int(self.value)\n        except ValueError:\n            return self.value\n        else:\n            return int.__format__(val, format_spec)\n\n    def __repr__(self) -> str:\n        return f\"<bumpversion.VersionPart:{self.func.__class__.__name__}:{self.value}>\"\n\n    def __eq__(self, other: Any) -> bool:\n        return self.value == other.value if isinstance(other, VersionComponent) else False\n\n\nclass VersionComponentSpec(BaseModel):\n    \"\"\"\n    Configuration of a version component.\n\n    This is used to read in the configuration from the bumpversion config file.\n    \"\"\"\n\n    values: Optional[list] = None\n    \"\"\"The possible values for the component. If it and `calver_format` is None, the component is numeric.\"\"\"\n\n    optional_value: Optional[str] = None  # Optional.\n    \"\"\"The value that is optional to include in the version.\n\n    - Defaults to first value in values or 0 in the case of numeric.",
  "start_line": 70,
  "end_line": 120,
  "total_lines": 282,
  "is_truncated": false
}
Generated tokens 176 tokens · stopped: STOP
In `bumpversion/versioning/serialization.py`: ```python 134: serialized = chosen_pattern.format(**local_context) ``` And `bumpversion/versioning/models.py`: ```python 92: def __format__(self, format_spec: str) -> str: ... 98: return int.__format__(val, format_spec) ``` Wait, `bumpversion/versioning/models.py` has a `__format__` method. Let's look closer at `bumpversion/versioning/models.py` around line 92.<channel|><|tool_call>call:read_file{filepath:<|"|>bumpversion/versioning/models.py<|"|>,start_line:70,end_line:120}<tool_call|><|tool_response>
Turn 3at 65 s205 tokens out5,525 prompt tokens
The `__format__` implementation seems correct:
```python
    def __format__(self, format_spec: str) -> str:
        try:
            val = int(self.value)
        except ValueError:
            return self.value
        else:
            return int.__format__(val, format_spec)
```
Wait, if `self.value` is a string (which it likely is), `int(self.value)` should work if it's numeric. Then `int.__format__(val, format_spec)` should handle the padding (e.g., `:02`).

Let's look at `bumpversion/versioning/serialization.py`'s `serialize` function to see what `local_context` contains.
TOOL CALL · read_file
{
  "end_line": 140,
  "filepath": "bumpversion/versioning/serialization.py",
  "start_line": 80
}
Result of read_file 2,494 characters
{
  "status": "ok",
  "filepath": "bumpversion/versioning/serialization.py",
  "content": "\ndef serialize(version: Version, serialize_patterns: List[str], context: MutableMapping) -> str:\n    \"\"\"\n    Attempts to serialize a version with the given serialization format.\n\n    - valid serialization patterns are those that are renderable with the given context\n    - formats that contain all required components are preferred\n    - the shortest valid serialization pattern is used\n    - if two patterns are equally short, the first one is used\n    - if no valid serialization pattern is found, an error is raised\n\n    Args:\n        version: The version to serialize\n        serialize_patterns: The serialization format to use, using Python's format string syntax\n        context: The context to use when serializing the version\n\n    Raises:\n        FormattingError: if a serialization pattern\n\n    Returns:\n        The serialized version as a string\n    \"\"\"\n    logger.debug(\"Serializing version '%s'\", version)\n    logger.indent()\n\n    local_context = copy(context)\n    local_context.update(version.values())\n    local_context_keys = set(local_context.keys())\n    required_component_labels = set(version.required_components())\n\n    patterns = []\n    for index, pattern in enumerate(serialize_patterns):\n        labels = set(labels_for_format(pattern))\n        patterns.append(\n            {\n                \"pattern\": pattern,\n                \"labels\": labels,\n                \"order\": index,\n                \"num_labels\": len(labels),\n                \"renderable\": local_context_keys >= labels,\n                \"has_required_components\": required_component_labels <= labels,\n            }\n        )\n\n    valid_patterns = filter(itemgetter(\"renderable\"), patterns)\n    sorted_patterns = multisort(\n        list(valid_patterns), ((\"has_required_components\", True), (\"num_labels\", False), (\"order\", False))\n    )\n\n    if not sorted_patterns:\n        raise FormattingError(f\"Could not find a valid serialization format in {serialize_patterns!r} for {version!r}\")\n\n    chosen_pattern = sorted_patterns[0][\"pattern\"]\n    logger.debug(\"Using serialization format '%s'\", chosen_pattern)\n    serialized = chosen_pattern.format(**local_context)\n    logger.debug(\"Serialized to '%s'\", serialized)\n    logger.dedent()\n\n    return serialized",
  "start_line": 80,
  "end_line": 138,
  "total_lines": 138,
  "is_truncated": false
}
Generated tokens 205 tokens · stopped: STOP
The `__format__` implementation seems correct: ```python def __format__(self, format_spec: str) -> str: try: val = int(self.value) except ValueError: return self.value else: return int.__format__(val, format_spec) ``` Wait, if `self.value` is a string (which it likely is), `int(self.value)` should work if it's numeric. Then `int.__format__(val, format_spec)` should handle the padding (e.g., `:02`). Let's look at `bumpversion/versioning/serialization.py`'s `serialize` function to see what `local_context` contains. <channel|><|tool_call>call:read_file{end_line:140,filepath:<|"|>bumpversion/versioning/serialization.py<|"|>,start_line:80}<tool_call|><|tool_response>
Turn 4at 85 s291 tokens out6,381 prompt tokens
`local_context.update(version.values())`.
Let's see what `version.values()` returns. It's likely a dictionary mapping labels (like 'major', 'minor') to `VersionComponent` objects.
If `version.values()` returns `VersionComponent` objects, then when `chosen_pattern.format(**local_context)` is called, the `__format__` of `VersionComponent` is used for each placeholder.

Let's verify this with a reproduction script.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nfrom bumpversion.versioning.models import Version, VersionComponent\nfrom bumpversion.versioning.serialization import serialize\n\n# Mimic the issue:\n# current_version = \"5.06.0\"\n# parse = \"(?P<major>\\\\d+)\\\\.(?P<minor>\\\\d+)\\\\.(?P<patch>\\\\d+)\"\n# serialize = [\"{major}.{minor:02}.{patch}\"]\n\n# Let's construct a Version object.\n# We need a Version object that has components 'major', 'minor', 'patch'.\n# Based on models.py, Version seems to be a collection of VersionComponents.\n\n# Let's look at Version's implementation in models.py\nPY\n"
}
Result of run_command 60 characters
{
  "status": "ok",
  "stdout": "",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 291 tokens · stopped: STOP
`local_context.update(version.values())`. Let's see what `version.values()` returns. It's likely a dictionary mapping labels (like 'major', 'minor') to `VersionComponent` objects. If `version.values()` returns `VersionComponent` objects, then when `chosen_pattern.format(**local_context)` is called, the `__format__` of `VersionComponent` is used for each placeholder. Let's verify this with a reproduction script. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' from bumpversion.versioning.models import Version, VersionComponent from bumpversion.versioning.serialization import serialize # Mimic the issue: # current_version = "5.06.0" # parse = "(?P<major>\\d+)\\.(?P<minor>\\d+)\\.(?P<patch>\\d+)" # serialize = ["{major}.{minor:02}.{patch}"] # Let's construct a Version object. # We need a Version object that has components 'major', 'minor', 'patch'. # Based on models.py, Version seems to be a collection of VersionComponents. # Let's look at Version's implementation in models.py PY <|"|>}<tool_call|><|tool_response>
Turn 5at 89 s57 tokens out6,709 prompt tokens
I need to see `Version` in `bumpversion/versioning/models.py`.
TOOL CALL · read_file
{
  "end_line": 70,
  "filepath": "bumpversion/versioning/models.py",
  "start_line": 1
}
Result of read_file 2,873 characters
{
  "status": "ok",
  "filepath": "bumpversion/versioning/models.py",
  "content": "\"\"\"Models for managing versioning of software projects.\"\"\"\n\nfrom __future__ import annotations\n\nfrom collections import defaultdict, deque\nfrom itertools import chain\nfrom typing import Any, Dict, List, Optional, Tuple, Union\n\nfrom pydantic import BaseModel, model_validator\n\nfrom bumpversion.exceptions import InvalidVersionPartError\nfrom bumpversion.utils import key_val_string\nfrom bumpversion.versioning.functions import CalVerFunction, NumericFunction, PartFunction, ValuesFunction\n\n\nclass VersionComponent:\n    \"\"\"\n    Represent part of a version number.\n\n    Determines the PartFunction that rules how the part behaves when increased or reset\n    based on the configuration given.\n    \"\"\"\n\n    def __init__(\n        self,\n        values: Optional[list] = None,\n        optional_value: Optional[str] = None,\n        first_value: Union[str, int, None] = None,\n        independent: bool = False,\n        always_increment: bool = False,\n        calver_format: Optional[str] = None,\n        source: Optional[str] = None,\n        value: Union[str, int, None] = None,\n    ):\n        self._value = str(value) if value is not None else None\n        self.func: Optional[PartFunction] = None\n        self.always_increment = always_increment\n        self.independent = True if always_increment else independent\n        self.source = source\n        self.calver_format = calver_format\n        if values:\n            str_values = [str(v) for v in values]\n            str_optional_value = str(optional_value) if optional_value is not None else None\n            str_first_value = str(first_value) if first_value is not None else None\n            self.func = ValuesFunction(str_values, str_optional_value, str_first_value)\n        elif calver_format:\n            self.func = CalVerFunction(calver_format)\n            self._value = self._value or self.func.first_value\n        else:\n            self.func = NumericFunction(optional_value, first_value or \"0\")\n\n    @property\n    def value(self) -> str:\n        \"\"\"Return the value of the part.\"\"\"\n        return self._value or self.func.optional_value\n\n    def copy(self) -> \"VersionComponent\":\n        \"\"\"Return a copy of the part.\"\"\"\n        return VersionComponent(\n            values=getattr(self.func, \"_values\", None),\n            optional_value=self.func.optional_value,\n            first_value=self.func.first_value,\n            independent=self.independent,\n            always_increment=self.always_increment,\n            calver_format=self.calver_format,\n            source=self.source,\n            value=self._value,\n        )\n\n    def bump(self) -> \"VersionComponent\":",
  "start_line": 1,
  "end_line": 70,
  "total_lines": 282,
  "is_truncated": false
}
Generated tokens 57 tokens · stopped: STOP
I need to see `Version` in `bumpversion/versioning/models.py`. <channel|><|tool_call>call:read_file{end_line:70,filepath:<|"|>bumpversion/versioning/models.py<|"|>,start_line:1}<tool_call|><|tool_response>
Turn 6at 92 s69 tokens out7,562 prompt tokens
Wait, I need the `Version` class. It's probably further down in `bumpversion/versioning/models.py`.
TOOL CALL · read_file
{
  "end_line": 282,
  "filepath": "bumpversion/versioning/models.py",
  "start_line": 120
}
Result of read_file 6,560 characters
{
  "status": "ok",
  "filepath": "bumpversion/versioning/models.py",
  "content": "    - Defaults to first value in values or 0 in the case of numeric.\n    - Empty string means nothing is optional.\n    - CalVer components ignore this.\"\"\"\n\n    first_value: Union[str, int, None] = None\n    \"\"\"The first value to increment from.\"\"\"\n\n    independent: bool = False\n    \"\"\"Is the component independent of the other components?\"\"\"\n\n    always_increment: bool = False\n    \"\"\"Should the component always increment, even if it is not necessary?\"\"\"\n\n    calver_format: Optional[str] = None\n    \"\"\"The format string for a CalVer component.\"\"\"\n\n    # source: Optional[str] = None  # Name of environment variable or context variable to use as the source for value\n    depends_on: Optional[str] = None\n    \"\"\"The name of the component this component depends on.\"\"\"\n\n    @model_validator(mode=\"before\")\n    @classmethod\n    def set_always_increment_with_calver(cls, data: Any) -> Any:\n        \"\"\"Set always_increment to True if calver_format is present.\"\"\"\n        if isinstance(data, dict) and data.get(\"calver_format\"):\n            data[\"always_increment\"] = True\n        return data\n\n    def create_component(self, value: Union[str, int, None] = None) -> VersionComponent:\n        \"\"\"Generate a version component from the configuration.\"\"\"\n        return VersionComponent(\n            values=self.values,\n            optional_value=self.optional_value,\n            first_value=self.first_value,\n            independent=self.independent,\n            always_increment=self.always_increment,\n            calver_format=self.calver_format,\n            # source=self.source,\n            value=value,\n        )\n\n\nclass VersionSpec:\n    \"\"\"The specification of a version's components and their relationships.\"\"\"\n\n    def __init__(self, components: Dict[str, VersionComponentSpec], order: Optional[List[str]] = None):\n        if not components:\n            raise ValueError(\"A VersionSpec must have at least one component.\")\n        if not order:\n            order = list(components.keys())\n        if len(set(order) - set(components.keys())) > 0:\n            raise ValueError(\"The order of components refers to items that are not in your components.\")\n\n        self.component_configs = components\n        self.order = order\n        self.dependency_map = defaultdict(list)\n        previous_component = self.order[0]\n        self.always_increment = [name for name, config in self.component_configs.items() if config.always_increment]\n        for component in self.order[1:]:\n            if self.component_configs[component].independent:\n                continue\n            elif self.component_configs[component].depends_on:\n                self.dependency_map[self.component_configs[component].depends_on].append(component)\n            else:\n                self.dependency_map[previous_component].append(component)\n            previous_component = component\n\n    def create_version(self, values: Dict[str, str]) -> \"Version\":\n        \"\"\"Generate a version from the given values.\"\"\"\n        components = {\n            key: comp_config.create_component(value=values.get(key))\n            for key, comp_config in self.component_configs.items()\n        }\n        return Version(version_spec=self, components=components)\n\n    def get_dependents(self, component_name: str) -> List[str]:\n        \"\"\"Return the parts that depend on the given part.\"\"\"\n        stack = deque(self.dependency_map.get(component_name, []), maxlen=len(self.order))\n        visited = []\n\n        while stack:\n            e = stack.pop()\n            if e not in visited:\n                visited.append(e)\n                stack.extendleft(self.dependency_map[e])\n\n        return visited\n\n\nclass Version:\n    \"\"\"The specification of a version and its parts.\"\"\"\n\n    def __init__(\n        self, version_spec: VersionSpec, components: Dict[str, VersionComponent], original: Optional[str] = None\n    ):\n        self.version_spec = version_spec\n        self.components = components\n        self.original = original\n\n    def values(self) -> Dict[str, str]:\n        \"\"\"Return the values of the parts.\"\"\"\n        return {key: value.value for key, value in self.components.items()}\n\n    def __getitem__(self, key: str) -> VersionComponent:\n        return self.components[key]\n\n    def __len__(self) -> int:\n        return len(self.components)\n\n    def __iter__(self):\n        return iter(self.components)\n\n    def __repr__(self):\n        return f\"<bumpversion.Version:{key_val_string(self.components)}>\"\n\n    def __eq__(self, other: Any) -> bool:\n        return (\n            all(value == other.components[key] for key, value in self.components.items())\n            if isinstance(other, Version)\n            else False\n        )\n\n    def required_components(self) -> List[str]:\n        \"\"\"Return the names of the parts that are required.\"\"\"\n        return [key for key, value in self.components.items() if value.value != value.func.optional_value]\n\n    def bump(self, component_name: str) -> \"Version\":\n        \"\"\"Increase the value of the specified component, reset its dependents, and return a new Version.\"\"\"\n        if component_name not in self.components:\n            raise InvalidVersionPartError(f\"No part named {component_name!r}\")\n\n        new_values = dict(self.components.items())\n        always_incr_values, components_to_reset = self._always_increment()\n        new_values.update(always_incr_values)\n\n        if component_name not in components_to_reset:\n            new_values[component_name] = self.components[component_name].bump()\n            components_to_reset |= set(self.version_spec.get_dependents(component_name))\n\n        for component in components_to_reset:\n            if not self.components[component].is_independent:\n                new_values[component] = self.components[component].null()\n\n        return Version(self.version_spec, new_values, self.original)\n\n    def _always_incr_dependencies(self) -> dict:\n        \"\"\"Return the components that always increment and depend on the given component.\"\"\"\n        return {name: self.version_spec.get_dependents(name) for name in self.version_spec.always_increment}\n\n    def _increment_always_incr(self) -> dict:",
  "start_line": 120,
  "end_line": 269,
  "total_lines": 282,
  "is_truncated": true
}
Generated tokens 69 tokens · stopped: STOP
Wait, I need the `Version` class. It's probably further down in `bumpversion/versioning/models.py`. <channel|><|tool_call>call:read_file{end_line:282,filepath:<|"|>bumpversion/versioning/models.py<|"|>,start_line:120}<tool_call|><|tool_response>
Turn 7at 174 s1,207 tokens out9,416 prompt tokens
Aha! Look at `Version.values()`:

```python
221:    def values(self) -> Dict[str, str]:
222:        \"\"\"Return the values of the parts.\"\"\"
223:        return {key: value.value for key, value in self.components.items()}
```

It's returning `value.value` for each component. `value.value` is a property of `VersionComponent`.

```python
48:    @property
49:    def value(self) -> str:
50:        \"\"\"Return the value of the part.\"\"\"
51:        return self._value or self.func.optional_value
```

`value.value` is a **string**.
When `serialize` does:
```python
134:    serialized = chosen_pattern.format(**local_context)
```
`local_context` contains the results of `version.values()`, which are strings.
When you call `.format()` on a string with a value that is a string, the format specifier (like `:02`) is applied to the string, not to it as an integer.
For a string, `:02` does NOT zero-pad the number if the string is `"6"`. Wait, let's check Python's string formatting for strings.

```python
>>> "{:02}".format("6")
'06'
>>> "{:02}".format("60")
'60'
```
Wait, it does work for strings in some cases? Let me check. Actually, for strings, `:02` might not do what you think. Let's try.

```python
>>> "{:02}".format("6")
'06'
```
Wait, I just tried it in my head and it might be wrong. Let me check in a real python shell.

Actually, let's test it.
```python
python3 -c 'print("{:02}".format("6"))' 
# Output: 06
python3 -c 'print("{:02}".format("60"))' 
# Output: 60
```
Wait, if the input is a string, `{:02}` does indeed zero-pad it.
Wait, the issue says: "Increasing minor would result in version 5.70.0 which is obviously wrong."
Wait, if current version is `5.06.0` and we increase minor, it should be `5.07.0`.
If it's `5.70.0`, maybe the value became `70`? That doesn't make sense.

Wait, maybe the value was `6` and it became `7`, and then `:02` made it `07`.
If the user says "Increasing minor would result in version 5.70.0", maybe they mean it should have been `5.07.0` but they got `5.70.0`? No, that's also weird.
Wait, "result in version 5.70.0". Maybe they meant `5.7.0` was serialized to `5.70.0`? No, that's impossible.

Let's re-read: "tried with version 0.20.1 and the following config parameters: current_version = '5.06.0'". (Wait, "tried with version 0.20.1" probably refers to the version of `bump-my-version` they are using).

"current_version = '5.06.0' ... Increasing minor would result in version 5.70.0"
If `5.06.0` minor is increased, it becomes `5.07.0`. If they got `5.70.0`, what happened?
Wait, if the value was `6` (int), and it was bumped to `7` (int), and then serialized as `:02`, it should be `07`.

If they got `70`, where did the `0` come from at the end?

Let's try to reproduce it.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nfrom bumpversion.versioning.models import Version, VersionSpec, VersionComponentSpec, VersionComponent\nfrom bumpversion.versioning.serialization import serialize\n\n# Setup a VersionSpec\ncomponents = {\n    \"major\": VersionComponentSpec(always_increment=False),\n    \"minor\": VersionComponentSpec(always_increment=False),\n    \"patch\": VersionComponentSpec(always_increment=False),\n}\nspec = VersionSpec(components, order=[\"major\", \"minor\", \"patch\"])\n\n# Create a version \"5.06.0\"\n# Note: VersionSpec.create_version takes a dict of values as strings\nversion = spec.create_version({\"major\": \"5\", \"minor\": \"06\", \"patch\": \"0\"})\nprint(f\"Initial version: {version}\")\n\n# Bump minor\nnew_version = version.bump(\"minor\")\nprint(f\"Bumped version: {new_version}\")\n\n# Serialize\nserialize_patterns = [\"{major}.{minor:02}.{patch}\"]\ncontext = {}\nresult = serialize(new_version, serialize_patterns, context)\nprint(f\"Serialized: {result}\")\nPY\n"
}
Result of run_command 211 characters
{
  "status": "ok",
  "stdout": "Initial version: <bumpversion.Version:major=5, minor=6, patch=0>\nBumped version: <bumpversion.Version:major=5, minor=7, patch=0>\nSerialized: 5.70.0\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 1,207 tokens · stopped: STOP
Aha! Look at `Version.values()`: ```python 221: def values(self) -> Dict[str, str]: 222: \"\"\"Return the values of the parts.\"\"\" 223: return {key: value.value for key, value in self.components.items()} ``` It's returning `value.value` for each component. `value.value` is a property of `VersionComponent`. ```python 48: @property 49: def value(self) -> str: 50: \"\"\"Return the value of the part.\"\"\" 51: return self._value or self.func.optional_value ``` `value.value` is a **string**. When `serialize` does: ```python 134: serialized = chosen_pattern.format(**local_context) ``` `local_context` contains the results of `version.values()`, which are strings. When you call `.format()` on a string with a value that is a string, the format specifier (like `:02`) is applied to the string, not to it as an integer. For a string, `:02` does NOT zero-pad the number if the string is `"6"`. Wait, let's check Python's string formatting for strings. ```python >>> "{:02}".format("6") '06' >>> "{:02}".format("60") '60' ``` Wait, it does work for strings in some cases? Let me check. Actually, for strings, `:02` might not do what you think. Let's try. ```python >>> "{:02}".format("6") '06' ``` Wait, I just tried it in my head and it might be wrong. Let me check in a real python shell. Actually, let's test it. ```python python3 -c 'print("{:02}".format("6"))' # Output: 06 python3 -c 'print("{:02}".format("60"))' # Output: 60 ``` Wait, if the input is a string, `{:02}` does indeed zero-pad it. Wait, the issue says: "Increasing minor would result in version 5.70.0 which is obviously wrong." Wait, if current version is `5.06.0` and we increase minor, it should be `5.07.0`. If it's `5.70.0`, maybe the value became `70`? That doesn't make sense. Wait, maybe the value was `6` and it became `7`, and then `:02` made it `07`. If the user says "Increasing minor would result in version 5.70.0", maybe they mean it should have been `5.07.0` but they got `5.70.0`? No, that's also weird. Wait, "result in version 5.70.0". Maybe they meant `5.7.0` was serialized to `5.70.0`? No, that's impossible. Let's re-read: "tried with version 0.20.1 and the following config parameters: current_version = '5.06.0'". (Wait, "tried with version 0.20.1" probably refers to the version of `bump-my-version` they are using). "current_version = '5.06.0' ... Increasing minor would result in version 5.70.0" If `5.06.0` minor is increased, it becomes `5.07.0`. If they got `5.70.0`, what happened? Wait, if the value was `6` (int), and it was bumped to `7` (int), and then serialized as `:02`, it should be `07`. If they got `70`, where did the `0` come from at the end? Let's try to reproduce it. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' from bumpversion.versioning.models import Version, VersionSpec, VersionComponentSpec, VersionComponent from bumpversion.versioning.serialization import serialize # Setup a VersionSpec components = { "major": VersionComponentSpec(always_increment=False), "minor": VersionComponentSpec(always_increment=False), "patch": VersionComponentSpec(always_increment=False), } spec = VersionSpec(components, order=["major", "minor", "patch"]) # Create a version "5.06.0" # Note: VersionSpec.create_version takes a dict of values as strings version = spec.create_version({"major": "5", "minor": "06", "patch": "0"}) print(f"Initial version: {version}") # Bump minor new_version = version.bump("minor") print(f"Bumped version: {new_version}") # Serialize serialize_patterns = ["{major}.{minor:02}.{patch}"] context = {} result = serialize(new_version, serialize_patterns, context) print(f"Serialized: {result}") PY <|"|>}<tool_call|><|tool_response>
Turn 8at 209 s610 tokens out10,717 prompt tokens
Wait! `Serialized: 5.70.0`!
I just reproduced it!
Wait, let's look at the output:
`Initial version: <bumpversion.Version:major=5, minor=6, patch=0>`
`Bumped version: <bumpversion.Version:major=5, minor=7, patch=0>`
`Serialized: 5.70.0`

Wait, why is it `5.70.0`?
The `serialize_patterns` was `["{major}.{minor:02}.{patch}"]`.
The components were `major=5`, `minor=7`, `patch=0`.
So it's `5`.`{7:02}``.`0`.
Wait, if `minor` is `7`, `{7:02}` should be `07`.
Wait, I just saw `5.70.0` in the output!
Wait, let me look at the output again.
`Serialized: 5.70.0`

Wait, look at the output carefully:
`major=5, minor=7, patch=0`
`Serialized: 5.70.0`

Is it possible that `{minor:02}` is formatting `7` as `70`? No.
Is it possible that `patch` is being inserted into `:02`?
No, `serialize_patterns` is `"{major}.{minor:02}.{patch}"`.

Let me try to run this again and print what `local_context` is.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nfrom bumpversion.versioning.models import Version, VersionSpec, VersionComponentSpec\nfrom bumpversion.versioning.serialization import serialize\n\ncomponents = {\n    \"major\": VersionComponentSpec(always_increment=False),\n    \"minor\": VersionComponentSpec(always_increment=False),\n    \"patch\": VersionComponentSpec(always_increment=False),\n}\nspec = VersionSpec(components, order=[\"major\", \"minor\", \"patch\"])\nversion = spec.create_version({\"major\": \"5\", \"minor\": \"06\", \"patch\": \"0\"})\nnew_version = version.bump(\"minor\")\n\nserialize_patterns = [\"{major}.{minor:02}.{patch}\"]\ncontext = {}\n\n# Let's see what serialize does internally\nlocal_context = context.copy()\nlocal_context.update(new_version.values())\nprint(f\"Local context: {local_context}\")\nchosen_pattern = serialize_patterns[0]\nserialized = chosen_pattern.format(**local_context)\nprint(f\"Serialized: {serialized}\")\nPY\n"
}
Result of run_command 139 characters
{
  "status": "ok",
  "stdout": "Local context: {'major': '5', 'minor': '7', 'patch': '0'}\nSerialized: 5.70.0\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 610 tokens · stopped: STOP
Wait! `Serialized: 5.70.0`! I just reproduced it! Wait, let's look at the output: `Initial version: <bumpversion.Version:major=5, minor=6, patch=0>` `Bumped version: <bumpversion.Version:major=5, minor=7, patch=0>` `Serialized: 5.70.0` Wait, why is it `5.70.0`? The `serialize_patterns` was `["{major}.{minor:02}.{patch}"]`. The components were `major=5`, `minor=7`, `patch=0`. So it's `5`.`{7:02}``.`0`. Wait, if `minor` is `7`, `{7:02}` should be `07`. Wait, I just saw `5.70.0` in the output! Wait, let me look at the output again. `Serialized: 5.70.0` Wait, look at the output carefully: `major=5, minor=7, patch=0` `Serialized: 5.70.0` Is it possible that `{minor:02}` is formatting `7` as `70`? No. Is it possible that `patch` is being inserted into `:02`? No, `serialize_patterns` is `"{major}.{minor:02}.{patch}"`. Let me try to run this again and print what `local_context` is. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' from bumpversion.versioning.models import Version, VersionSpec, VersionComponentSpec from bumpversion.versioning.serialization import serialize components = { "major": VersionComponentSpec(always_increment=False), "minor": VersionComponentSpec(always_increment=False), "patch": VersionComponentSpec(always_increment=False), } spec = VersionSpec(components, order=["major", "minor", "patch"]) version = spec.create_version({"major": "5", "minor": "06", "patch": "0"}) new_version = version.bump("minor") serialize_patterns = ["{major}.{minor:02}.{patch}"] context = {} # Let's see what serialize does internally local_context = context.copy() local_context.update(new_version.values()) print(f"Local context: {local_context}") chosen_pattern = serialize_patterns[0] serialized = chosen_pattern.format(**local_context) print(f"Serialized: {serialized}") PY <|"|>}<tool_call|><|tool_response>
Turn 9at 218 s142 tokens out11,399 prompt tokens
Wait... what?
`Local context: {'major': '5', 'minor': '7', 'patch': '0'}`
`Serialized: 5.70.0`
Wait, is `"{major}.{minor:02}.{patch}".format(major='5', minor='7', patch='0')` really `5.70.0`?
Let me test this in a tiny python script.
TOOL CALL · run_command
{
  "command": "python3 -c \"print('{major}.{minor:02}.{patch}'.format(major='5', minor='7', patch='0'))\""
}
Result of run_command 68 characters
{
  "status": "ok",
  "stdout": "5.70.0\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 142 tokens · stopped: STOP
Wait... what? `Local context: {'major': '5', 'minor': '7', 'patch': '0'}` `Serialized: 5.70.0` Wait, is `"{major}.{minor:02}.{patch}".format(major='5', minor='7', patch='0')` really `5.70.0`? Let me test this in a tiny python script. <channel|><|tool_call>call:run_command{command:<|"|>python3 -c "print('{major}.{minor:02}.{patch}'.format(major='5', minor='7', patch='0'))"<|"|>}<tool_call|><|tool_response>
Turn 10at 237 s248 tokens out11,587 prompt tokens
WHAAAAT?
Let me try it again. I must be crazy.
Wait, `{:02}` on a string `"7"`...
Ah!
`{:02}` for a string means "minimum width of 2, pad with spaces if shorter".
BUT, if you use `0` before the `2`, it means zero-padding.
WAIT. In Python, for strings, `{:02}` does NOT zero-pad.
Let's see:
```python
>>> "{:02}".format("7")
' 7' # Wait, if I did this in a shell it might be ' 7'
```
Wait, let me check again.

```python
python3 -c "print('7' == '{:02}'.format('7'))" # False
python3 -c "print('{:02}'.format('7'))"
```
Wait, I'll just run it.
TOOL CALL · run_command
{
  "command": "python3 -c \"print(f'7: {repr(\\\"{:02}\\\".format(\\\"7\\\"))}')\""
}
Result of run_command 69 characters
{
  "status": "ok",
  "stdout": "7: '70'\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 248 tokens · stopped: STOP
WHAAAAT? Let me try it again. I must be crazy. Wait, `{:02}` on a string `"7"`... Ah! `{:02}` for a string means "minimum width of 2, pad with spaces if shorter". BUT, if you use `0` before the `2`, it means zero-padding. WAIT. In Python, for strings, `{:02}` does NOT zero-pad. Let's see: ```python >>> "{:02}".format("7") ' 7' # Wait, if I did this in a shell it might be ' 7' ``` Wait, let me check again. ```python python3 -c "print('7' == '{:02}'.format('7'))" # False python3 -c "print('{:02}'.format('7'))" ``` Wait, I'll just run it. <channel|><|tool_call>call:run_command{command:<|"|>python3 -c "print(f'7: {repr(\"{:02}\".format(\"7\"))}')"<|"|>}<tool_call|><|tool_response>
Turn 11at 241 s60 tokens out11,880 prompt tokens
Wait... `70`?
I am so confused. Let me try it without the `f-string` and `repr`.
TOOL CALL · run_command
{
  "command": "python3 -c \"print('{:02}'.format('7'))\""
}
Result of run_command 64 characters
{
  "status": "ok",
  "stdout": "70\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 60 tokens · stopped: STOP
Wait... `70`? I am so confused. Let me try it without the `f-string` and `repr`. <channel|><|tool_call>call:run_command{command:<|"|>python3 -c "print('{:02}'.format('7'))"<|"|>}<tool_call|><|tool_response>
Turn 12at 248 s87 tokens out11,982 prompt tokens
Wait, what is happening? `{:02}` on string `"7"` is `70`?
Wait, I just realized... I might be in a weird environment?
No, this is standard Python.
Let me try `{:01}`.
TOOL CALL · run_command
{
  "command": "python3 -c \"print('{:02}'.format('7'))\""
}
Result of run_command 64 characters
{
  "status": "ok",
  "stdout": "70\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 87 tokens · stopped: STOP
Wait, what is happening? `{:02}` on string `"7"` is `70`? Wait, I just realized... I might be in a weird environment? No, this is standard Python. Let me try `{:01}`. <channel|><|tool_call>call:run_command{command:<|"|>python3 -c "print('{:02}'.format('7'))"<|"|>}<tool_call|><|tool_response>
Turn 13at 281 s469 tokens out12,111 prompt tokens
Hold on. I might be misremembering Python format strings.
Let me try this:
```python
python3 -c "print(format('7', '02'))"
```

Wait, if I use `02` as the format spec for a string...
Wait, is it possible that `0` is treated as a part of the format?
For strings, the format spec is `[[fill]align][sign][#][0][width][grouping_option][.precision][type]`.
If `align` is omitted, it defaults to space.
If `0` is present, it means "zero-padding". But zero-padding is only supported for numeric types.
Actually, for strings, it is NOT supported.
Wait, if I provide `02`, and `0` is not a valid align, maybe it's treated as something else?

Wait, I just realized what's happening.
`"{major}.{minor:02}.{patch}"`
If `minor` is `'7'`, then `{minor:02}` is `format('7', '02')`.
If Python sees `02`, and it's a string, maybe it's NOT zero-padding.
But where does the `0` come from in `70`?
Wait! I just realized.
`{minor:02}`
Maybe the `0` is not a format specifier, but part of the string? No, it's after the `:`.
Wait... I just had a thought.
Is it possible that the `.` is being treated as part of the format? No.

Let me try this:
```python
python3 -c "print(format('7', '02'))"
```

Actually, I'll just run a script to explore this.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nprint(f\"'{format('7', '02')}'\")\nprint(f\"'{format('7', '2')}'\")\nprint(f\"'{format('7', '02')}'\")\nPY\n"
}
Result of run_command 78 characters
{
  "status": "ok",
  "stdout": "'70'\n'7 '\n'70'\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 469 tokens · stopped: STOP
Hold on. I might be misremembering Python format strings. Let me try this: ```python python3 -c "print(format('7', '02'))" ``` Wait, if I use `02` as the format spec for a string... Wait, is it possible that `0` is treated as a part of the format? For strings, the format spec is `[[fill]align][sign][#][0][width][grouping_option][.precision][type]`. If `align` is omitted, it defaults to space. If `0` is present, it means "zero-padding". But zero-padding is only supported for numeric types. Actually, for strings, it is NOT supported. Wait, if I provide `02`, and `0` is not a valid align, maybe it's treated as something else? Wait, I just realized what's happening. `"{major}.{minor:02}.{patch}"` If `minor` is `'7'`, then `{minor:02}` is `format('7', '02')`. If Python sees `02`, and it's a string, maybe it's NOT zero-padding. But where does the `0` come from in `70`? Wait! I just realized. `{minor:02}` Maybe the `0` is not a format specifier, but part of the string? No, it's after the `:`. Wait... I just had a thought. Is it possible that the `.` is being treated as part of the format? No. Let me try this: ```python python3 -c "print(format('7', '02'))" ``` Actually, I'll just run a script to explore this. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' print(f"'{format('7', '02')}'") print(f"'{format('7', '2')}'") print(f"'{format('7', '02')}'") PY <|"|>}<tool_call|><|tool_response>
Turn 14at 286 s88 tokens out12,631 prompt tokens
Wait, `format('7', '02')` is `'70'`?
I've never seen this in my life.
Let me try `format(7, '02')` (integer).
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nprint(f\"'{format(7, '02')}'\")\nPY\n"
}
Result of run_command 66 characters
{
  "status": "ok",
  "stdout": "'07'\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 88 tokens · stopped: STOP
Wait, `format('7', '02')` is `'70'`? I've never seen this in my life. Let me try `format(7, '02')` (integer). <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' print(f"'{format(7, '02')}'") PY <|"|>}<tool_call|><|tool_response>
Turn 15at 325 s542 tokens out12,761 prompt tokens
Okay, so for an integer `7`, `format(7, '02')` is `'07'`.
For a string `'7'`, `format('7', '02')` is `'70'`.

Wait, WHY?
I'll search for "python format string 02 string" online (in my mind).
Actually, if I have a string and I use `:02`, the `0` is the fill character if `align` is specified.
If `align` is not specified, `0` is NOT a valid fill character unless `align` is specified.
Wait...
If I use `{:02}`, the `0` is the `fill` character?
If `align` is not specified, it defaults to space.
Wait, if I have `{:02}`, then `0` is the fill character?
No, the format spec is `[[fill]align][sign][#][0][width][grouping_option][.precision][type]`.
The `0` here is the "zero-padding" flag.
According to Python docs: "The '0' option... is only allowed for numeric types."
If it's used for a string, it should be an error or ignored.

Wait, I just noticed something.
I am using `format('7', '02')`.
Maybe the `0` in `02` is being interpreted as the `fill` character and the `2` as the `width`?
But `fill` must be followed by an `align` character (`<`, `>`, `^`).
If no `align` is provided, it's not a `fill` character.

Wait! I just noticed something in my previous `run_command` output.
`'70'`
Wait, is the `0` at the END?
Yes, `'70'`.
This means it's right-aligned and padded with `0`?
No, that would be `'07'`.
`'70'` means it's left-aligned and padded with `0`?
But left-align is `<`.

I am completely baffled by Python's behavior here.
Let me try different values.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nfor i in range(1, 10):\n    print(f\"'{i}' -> '{format(str(i), '02')}'\")\nPY\n"
}
Result of run_command 177 characters
{
  "status": "ok",
  "stdout": "'1' -> '10'\n'2' -> '20'\n'3' -> '30'\n'4' -> '40'\n'5' -> '50'\n'6' -> '60'\n'7' -> '70'\n'8' -> '80'\n'9' -> '90'\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 542 tokens · stopped: STOP
Okay, so for an integer `7`, `format(7, '02')` is `'07'`. For a string `'7'`, `format('7', '02')` is `'70'`. Wait, WHY? I'll search for "python format string 02 string" online (in my mind). Actually, if I have a string and I use `:02`, the `0` is the fill character if `align` is specified. If `align` is not specified, `0` is NOT a valid fill character unless `align` is specified. Wait... If I use `{:02}`, the `0` is the `fill` character? If `align` is not specified, it defaults to space. Wait, if I have `{:02}`, then `0` is the fill character? No, the format spec is `[[fill]align][sign][#][0][width][grouping_option][.precision][type]`. The `0` here is the "zero-padding" flag. According to Python docs: "The '0' option... is only allowed for numeric types." If it's used for a string, it should be an error or ignored. Wait, I just noticed something. I am using `format('7', '02')`. Maybe the `0` in `02` is being interpreted as the `fill` character and the `2` as the `width`? But `fill` must be followed by an `align` character (`<`, `>`, `^`). If no `align` is provided, it's not a `fill` character. Wait! I just noticed something in my previous `run_command` output. `'70'` Wait, is the `0` at the END? Yes, `'70'`. This means it's right-aligned and padded with `0`? No, that would be `'07'`. `'70'` means it's left-aligned and padded with `0`? But left-align is `<`. I am completely baffled by Python's behavior here. Let me try different values. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' for i in range(1, 10): print(f"'{i}' -> '{format(str(i), '02')}'") PY <|"|>}<tool_call|><|tool_response>
Turn 16at 364 s794 tokens out13,421 prompt tokens
Wait... `1` becomes `10`, `2` becomes `20`...
This is absolutely insane.
Wait! I just realized!
`'1' -> '10'`
Is it possible that the `0` is NOT a zero-padding but the `width` is `0` and... no.
Wait, I just noticed something.
Could it be that `{:02}` is being interpreted as `fill='0', align='2'`? No, `2` is not a valid align.

Wait! I have an idea.
What if the `0` is the `fill` character and the `2` is the `width`?
If the align is not specified, it defaults to...
Wait, if I use `{:0>2}`, it's `'07'`.
If I use `{:0<2}`, it's `'70'`.

Wait, if I just use `{:02}`, and it's a string...
Is `0` a valid align? No.
Is `2` a valid align? No.

Actually, I think I've found the problem.
The `Version.values()` method returns strings.
```python
    def values(self) -> Dict[str, str]:
        \"\"\"Return the values of the parts.\"\"\"
        return {key: value.value for key, value in self.components.items()}
```
And `serialize` uses these strings in `.format()`.
If we change `Version.values()` to return the `VersionComponent` objects themselves instead of their `.value` (which is a string), then the `VersionComponent.__format__` method will be used.

Let's look at `VersionComponent.__format__` again:
```python
    def __format__(self, format_spec: str) -> str:
        try:
            val = int(self.value)
        except ValueError:
            return self.value
        else:
            return int.__format__(val, format_spec)
```
This method explicitly converts the value to an `int` and uses `int.__format__(val, format_spec)`, which handles zero-padding correctly!

So, if `local_context` contains `VersionComponent` objects, the formatting will work as expected.

Let's test this hypothesis.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nfrom bumpversion.versioning.models import Version, VersionSpec, VersionComponentSpec, VersionComponent\nfrom bumpversion.versioning.serialization import serialize\n\ncomponents = {\n    \"major\": VersionComponentSpec(always_increment=False),\n    \"minor\": VersionComponentSpec(always_increment=False),\n    \"patch\": VersionComponentSpec(always_increment=False),\n}\nspec = VersionSpec(components, order=[\"major\", \"minor\", \"patch\"])\nversion = spec.create_version({\"major\": \"5\", \"minor\": \"06\", \"patch\": \"0\"})\nnew_version = version.bump(\"minor\")\n\nserialize_patterns = [\"{major}.{minor:02}.{patch}\"]\ncontext = {}\n\n# Instead of version.values(), let's use new_version.components\nlocal_context = context.copy()\nlocal_context.update(new_version.components)\nprint(f\"Local context (now using components): {local_context}\")\n\n# Use .format()\nchosen_pattern = serialize_patterns[0]\nserialized = chosen_pattern.format(**local_context)\nprint(f\"Serialized: {serialized}\")\nPY\n"
}
Result of run_command 282 characters
{
  "status": "ok",
  "stdout": "Local context (now using components): {'major': <bumpversion.VersionPart:NumericFunction:5>, 'minor': <bumpversion.VersionPart:NumericFunction:7>, 'patch': <bumpversion.VersionPart:NumericFunction:0>}\nSerialized: 5.07.0\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 794 tokens · stopped: STOP
Wait... `1` becomes `10`, `2` becomes `20`... This is absolutely insane. Wait! I just realized! `'1' -> '10'` Is it possible that the `0` is NOT a zero-padding but the `width` is `0` and... no. Wait, I just noticed something. Could it be that `{:02}` is being interpreted as `fill='0', align='2'`? No, `2` is not a valid align. Wait! I have an idea. What if the `0` is the `fill` character and the `2` is the `width`? If the align is not specified, it defaults to... Wait, if I use `{:0>2}`, it's `'07'`. If I use `{:0<2}`, it's `'70'`. Wait, if I just use `{:02}`, and it's a string... Is `0` a valid align? No. Is `2` a valid align? No. Actually, I think I've found the problem. The `Version.values()` method returns strings. ```python def values(self) -> Dict[str, str]: \"\"\"Return the values of the parts.\"\"\" return {key: value.value for key, value in self.components.items()} ``` And `serialize` uses these strings in `.format()`. If we change `Version.values()` to return the `VersionComponent` objects themselves instead of their `.value` (which is a string), then the `VersionComponent.__format__` method will be used. Let's look at `VersionComponent.__format__` again: ```python def __format__(self, format_spec: str) -> str: try: val = int(self.value) except ValueError: return self.value else: return int.__format__(val, format_spec) ``` This method explicitly converts the value to an `int` and uses `int.__format__(val, format_spec)`, which handles zero-padding correctly! So, if `local_context` contains `VersionComponent` objects, the formatting will work as expected. Let's test this hypothesis. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' from bumpversion.versioning.models import Version, VersionSpec, VersionComponentSpec, VersionComponent from bumpversion.versioning.serialization import serialize components = { "major": VersionComponentSpec(always_increment=False), "minor": VersionComponentSpec(always_increment=False), "patch": VersionComponentSpec(always_increment=False), } spec = VersionSpec(components, order=["major", "minor", "patch"]) version = spec.create_version({"major": "5", "minor": "06", "patch": "0"}) new_version = version.bump("minor") serialize_patterns = ["{major}.{minor:02}.{patch}"] context = {} # Instead of version.values(), let's use new_version.components local_context = context.copy() local_context.update(new_version.components) print(f"Local context (now using components): {local_context}") # Use .format() chosen_pattern = serialize_patterns[0] serialized = chosen_pattern.format(**local_context) print(f"Serialized: {serialized}") PY <|"|>}<tool_call|><|tool_response>
Turn 17at 383 s289 tokens out14,318 prompt tokens
YES! `Serialized: 5.07.0`.
The problem is exactly that `Version.values()` is returning strings, which bypasses `VersionComponent.__format__`.

Wait, let's check `Version.values()` in `bumpversion/versioning/models.py`.

```python
221:    def values(self) -> Dict[str, str]:
222:        \"\"\"Return the values of the parts.\"\"\"
223:        return {key: value.value for key, value in self.components.items()}
```

We should change this to return the components themselves.
But wait, `values()` is typed as `Dict[str, str]`. If we change it to return `VersionComponent` objects, we might break other things.

Let's see where `Version.values()` is used.
It's used in `bumpversion/versioning/serialization.py`:
```python
111:    local_context = copy(context)
112:    local_context.update(version.values())
```

Wait, are there other places where `Version.values()` is used?
Let's grep.
TOOL CALL · run_command
{
  "command": "grep -rn \"version.values()\" bumpversion/"
}
Result of run_command 148 characters
{
  "status": "ok",
  "stdout": "bumpversion/versioning/serialization.py:106:    local_context.update(version.values())\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 289 tokens · stopped: STOP
YES! `Serialized: 5.07.0`. The problem is exactly that `Version.values()` is returning strings, which bypasses `VersionComponent.__format__`. Wait, let's check `Version.values()` in `bumpversion/versioning/models.py`. ```python 221: def values(self) -> Dict[str, str]: 222: \"\"\"Return the values of the parts.\"\"\" 223: return {key: value.value for key, value in self.components.items()} ``` We should change this to return the components themselves. But wait, `values()` is typed as `Dict[str, str]`. If we change it to return `VersionComponent` objects, we might break other things. Let's see where `Version.values()` is used. It's used in `bumpversion/versioning/serialization.py`: ```python 111: local_context = copy(context) 112: local_context.update(version.values()) ``` Wait, are there other places where `Version.values()` is used? Let's grep. <channel|><|tool_call>call:run_command{command:<|"|>grep -rn "version.values()" bumpversion/<|"|>}<tool_call|><|tool_response>
Turn 18at 389 s84 tokens out14,672 prompt tokens
It seems `Version.values()` is only used in `bumpversion/versioning/serialization.py`.
Wait, what about other places calling `.values()` on a `Version` object?

Actually, `Version` is a class, so we should search for `.values(`.
TOOL CALL · run_command
{
  "command": "grep -rn \"\\.values(\" bumpversion/"
}
Result of run_command 331 characters
{
  "status": "ok",
  "stdout": "bumpversion/versioning/models.py:281:        unique_dependents = set(chain.from_iterable(dependents.values()))\nbumpversion/versioning/serialization.py:106:    local_context.update(version.values())\nbumpversion/show.py:19:        print_info(next(iter(value.values())))\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 84 tokens · stopped: STOP
It seems `Version.values()` is only used in `bumpversion/versioning/serialization.py`. Wait, what about other places calling `.values()` on a `Version` object? Actually, `Version` is a class, so we should search for `.values(`. <channel|><|tool_call>call:run_command{command:<|"|>grep -rn "\.values(" bumpversion/<|"|>}<tool_call|><|tool_response>

Patch, tests and logs

Final code change Included
Test output Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Test errors Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Test report (JUnit) Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Agent log Included
  [   0.0s] 📋 System Prompt: You are a principal Python software engineer resolving a repository issue in `/workspace`.
  [   0.0s] 🎯 Task Prompt: You are evaluating a software engineering task for repository 
callowayproject/bump-my-version.
  [  36.8s] 💭 (1273 chars) "The user is reporting a bug where zero-padded version parts are not working.
Specifically, with `current_version = "5.06..."
  [  36.8s] 🔧 run_command grep -rn --include="*.py" -E "serialize|format" bumpversion/versioning/serializa
  [  36.8s]   → bumpversion/versioning/serialization.py:10:from bumpversion.utils import key_val_string, 
labels_for_format
  [  48.8s] 💭 (427 chars) "In `bumpversion/versioning/serialization.py`:
```python
134:    serialized = chosen_pattern.format(**local_context)
```
..."
  [  48.8s] 📖 read_file (bumpversion/versioning/models.py)
  [  48.9s]   ✓ {'status': 'ok', 'filepath': 'bumpversion/versioning/models.py', 'content': '    def bump(self) -> 
"VersionComponent":\n…
  [  64.3s] 💭 (583 chars) "The `__format__` implementation seems correct:
```python
    def __format__(self, format_spec: str) -> str:
        try:..."
  [  64.3s] 📖 read_file (bumpversion/versioning/serialization.py)
  [  64.4s]   ✓ {'status': 'ok', 'filepath': 'bumpversion/versioning/serialization.py', 'content': '\ndef 
serialize(version: Version, se…
  [  84.2s] 💭 (415 chars) "`local_context.update(version.values())`.
Let's see what `version.values()` returns. It's likely a dictionary mapping la..."
  [  84.2s] 🔧 run_command (15 lines) python3 - <<'PY'
  [  84.7s]   🔧 
  [  88.3s] 💭 (62 chars) "I need to see `Version` in `bumpversion/versioning/models.py`."
  [  88.3s] 📖 read_file (bumpversion/versioning/models.py)
  [  88.4s]   ✓ {'status': 'ok', 'filepath': 'bumpversion/versioning/models.py', 'content': '"""Models for managing 
versioning of softwa…
  [  91.5s] 💭 (99 chars) "Wait, I need the `Version` class. It's probably further down in 
`bumpversion/versioning/models.py`."
  [  91.5s] 📖 read_file (bumpversion/versioning/models.py)
  [  91.5s]   ✓ {'status': 'ok', 'filepath': 'bumpversion/versioning/models.py', 'content': '    - Defaults to first 
value in values or …
  [ 173.1s] 💭 (2737 chars) "Aha! Look at `Version.values()`:

```python
221:    def values(self) -> Dict[str, str]:
222:        \"\"\"Return the val..."
  [ 173.1s] 🔧 run_command (27 lines) python3 - <<'PY'
  [ 173.3s]   → Initial version: <bumpversion.Version:major=5, minor=6, patch=0>
  [ 208.4s] 💭 (890 chars) "Wait! `Serialized: 5.70.0`!
I just reproduced it!
Wait, let's look at the output:
`Initial version: <bumpversion.Version..."
  [ 208.4s] 🔧 run_command (24 lines) python3 - <<'PY'
  [ 208.6s]   → Local context: {'major': '5', 'minor': '7', 'patch': '0'}
  [ 217.3s] 💭 (233 chars) "Wait... what?
`Local context: {'major': '5', 'minor': '7', 'patch': '0'}`
`Serialized: 5.70.0`
Wait, is `"{major}.{minor..."
  [ 217.3s] 🔧 run_command python3 -c "print('{major}.{minor:02}.{patch}'.format(major='5', minor='7', patc
  [ 217.4s]   → 5.70.0
  [ 236.4s] 💭 (542 chars) "WHAAAAT?
Let me try it again. I must be crazy.
Wait, `{:02}` on a string `"7"`...
Ah!
`{:02}` for a string means "minimu..."
  [ 236.4s] 🔧 run_command python3 -c "print(f'7: {repr(\"{:02}\".format(\"7\"))}')"
  [ 236.5s]   → 7: '70'
  [ 240.5s] 💭 (80 chars) "Wait... `70`?
I am so confused. Let me try it without the `f-string` and `repr`."
  [ 240.5s] 🔧 run_command python3 -c "print('{:02}'.format('7'))"
  [ 240.6s]   → 70
  [ 247.7s] 💭 (166 chars) "Wait, what is happening? `{:02}` on string `"7"` is `70`?
Wait, I just realized... I might be in a weird environment?
No..."
  [ 247.7s] 🔧 run_command python3 -c "print('{:02}'.format('7'))"
  [ 247.8s]   → 70
  [ 280.3s] 💭 (1225 chars) "Hold on. I might be misremembering Python format strings.
Let me try this:
```python
python3 -c "print(format('7', '02')..."
  [ 280.3s] 🔧 run_command (5 lines) python3 - <<'PY'
  [ 280.4s]   → '70'
  [ 285.1s] 💭 (109 chars) "Wait, `format('7', '02')` is `'70'`?
I've never seen this in my life.
Let me try `format(7, '02')` (integer)."
  [ 285.1s] 🔧 run_command (3 lines) python3 - <<'PY'
  [ 285.2s]   → '07'
  [ 324.4s] 💭 (1463 chars) "Okay, so for an integer `7`, `format(7, '02')` is `'07'`.
For a string `'7'`, `format('7', '02')` is `'70'`.

Wait, WHY?..."
  [ 324.4s] 🔧 run_command (4 lines) python3 - <<'PY'
  [ 324.5s]   → '1' -> '10'
  [ 363.1s] 💭 (1706 chars) "Wait... `1` becomes `10`, `2` becomes `20`...
This is absolutely insane.
Wait! I just realized!
`'1' -> '10'`
Is it poss..."
  [ 363.1s] 🔧 run_command (26 lines) python3 - <<'PY'
  [ 363.3s]   → Local context (now using components): {'major': <bumpversion.VersionPart:NumericFunction:5>, 'minor': 
<bumpversion.Versi
  [ 382.4s] 💭 (883 chars) "YES! `Serialized: 5.07.0`.
The problem is exactly that `Version.values()` is returning strings, which bypasses `VersionC..."
  [ 382.4s] 🔧 run_command grep -rn "version.values()" bumpversion/
  [ 382.4s]   → bumpversion/versioning/serialization.py:106:    local_context.update(version.values())
  [ 388.9s] 💭 (228 chars) "It seems `Version.values()` is only used in `bumpversion/versioning/serialization.py`.
Wait, what about other places cal..."
  [ 388.9s] 🔧 run_command grep -rn "\.values(" bumpversion/
  [ 388.9s]   → bumpversion/versioning/models.py:281:        unique_dependents = 
set(chain.from_iterable(dependents.values()))
Native result row
{
  "agent_error": "Agent exceeded session timeout (7.5 min)",
  "duration_seconds": 452.74,
  "error": "Empty agent patch",
  "grade": {
    "error": "Empty agent patch",
    "resolved": false,
    "strict_clean_patch": false,
    "test_exit_code": -1
  },
  "instance_id": "callowayproject__bump-my-version-180",
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