Codeowners Parser

0.8.0 · active · verified Sat Apr 11

A Python library for parsing and working with CODEOWNERS files, typically used in Git repositories to define ownership for different parts of the codebase. It provides methods to identify the owners of specific file paths based on the rules defined in a CODEOWNERS file. The current version is 0.8.0. Releases are infrequent, usually for minor bug fixes or small feature additions.

Common errors

```
ModuleNotFoundError: No module named 'codeowners'
```
cause The 'codeowners' library is not installed in your Python environment or the Python interpreter cannot find it.

fix Install the library using pip: `pip install codeowners`
```
FileNotFoundError: [Errno 2] No such file or directory: 'CODEOWNERS'
```
cause The Python program attempted to open a CODEOWNERS file at a specified path, but the file does not exist there.

fix Ensure the 'CODEOWNERS' file exists at the path provided (e.g., to `open()`) or that the current working directory is correct when the program is run.
```
ValueError: Invalid CODEOWNERS file syntax at line X
```
cause The content of the CODEOWNERS file contains syntax errors or malformed patterns/owners, preventing the 'codeowners' library from parsing it correctly.

fix Review and correct the syntax of your CODEOWNERS file, paying attention to the line number indicated in the error message. Ensure patterns and owner specifications follow the CODEOWNERS file format (e.g., GitHub's specification).
```
AttributeError: 'CodeOwners' object has no attribute 'some_method_name'
```
cause You are attempting to call a method or access an attribute that does not exist on the `CodeOwners` object or one of the objects it returns.

fix Consult the `codeowners` library documentation to verify the correct method names and attributes available for the `CodeOwners` object and its related data structures.

Warnings

breaking Version 0.2.0 introduced a significant API-breaking change. The main `Codeowners` class was removed and is no longer importable. The library shifted its focus to providing lower-level parsing functions.
Fix: Applications importing `Codeowners` will encounter an `ImportError`. To migrate, use the new parsing functions available under `codeowners.parser`. If the high-level `Codeowners` object is required, pin the library version to `<0.2.0`.
gotcha The `Codeowners` constructor searches for CODEOWNERS files in specific default locations (`.github/CODEOWNERS`, `CODEOWNERS` in root, `docs/CODEOWNERS`) if no explicit path is provided.
Fix: To avoid ambiguity and ensure the correct file is parsed, always explicitly provide the path to your CODEOWNERS file, e.g., `Codeowners('path/to/your/CODEOWNERS')`.
gotcha The library strictly follows the CODEOWNERS specification's rule that the last matching pattern in the file takes precedence.
Fix: Ensure your CODEOWNERS file is ordered correctly according to your desired ownership hierarchy. If results are unexpected, verify the precedence rules defined in the CODEOWNERS specification.
breaking The main class provided by the `codeowners` library is `CodeOwners` (with an uppercase 'O'), not `Codeowners` (lowercase 'o'). Attempting to import `Codeowners` will result in an `ImportError`.
Fix: Ensure you use the correct capitalization when importing the main class: `from codeowners import CodeOwners`.

Install

pip install codeowners Install stable version

Imports

Codeowners
```
from codeowners import Codeowners
```

CodeownersError

from codeowners.exceptions import CodeownersError

Quickstart

This quickstart demonstrates how to initialize the `Codeowners` parser and retrieve the owners for specific file paths. It creates a temporary CODEOWNERS file to illustrate usage.

from codeowners import Codeowners

# Create a dummy CODEOWNERS file for demonstration
with open('.github/CODEOWNERS', 'w') as f:
    f.write("*.py @python-devs\n/src/docs/* @docs-team\n/src/app/core/ @core-maintainers")

# Initialize the parser with the path to the CODEOWNERS file
# Note: The library searches default paths if not explicitly given, 
# but providing the path is best practice.
co = Codeowners('.github/CODEOWNERS')

# Get owners for a specific file path
owners_py = co.of('src/app/utils.py')
print(f"Owners for src/app/utils.py: {owners_py}")

owners_doc = co.of('src/docs/guide.md')
print(f"Owners for src/docs/guide.md: {owners_doc}")

owners_core = co.of('src/app/core/models.py')
print(f"Owners for src/app/core/models.py: {owners_core}")

# Clean up the dummy file
import os
os.remove('.github/CODEOWNERS')

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