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CONTRIBUTING.rst

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Contributing to PyMongo

PyMongo has a large community and contributions are always encouraged. Contributions can be as simple as minor tweaks to the documentation. Please read these guidelines before sending a pull request.

Bugfixes and New Features

Before starting to write code, look for existing tickets or create one for your specific issue or feature request. That way you avoid working on something that might not be of interest or that has already been addressed.

Supported Interpreters

PyMongo supports CPython 3.6+ and PyPy3.6+. Language features not supported by all interpreters can not be used.

Style Guide

PyMongo follows PEP8 including 4 space indents and 79 character line limits.

General Guidelines

  • Avoid backward breaking changes if at all possible.
  • Write inline documentation for new classes and methods.
  • Write tests and make sure they pass (make sure you have a mongod running on the default port, then execute python setup.py test from the cmd line to run the test suite).
  • Add yourself to doc/contributors.rst :)

Running Linters

PyMongo uses pre-commit for managing linting of the codebase. pre-commit performs various checks on all files in PyMongo and uses tools that help follow a consistent code style within the codebase.

To set up pre-commit locally, run:

pip install pre-commit
pre-commit install

To run pre-commit manually, run:

pre-commit run --all-files

Documentation

To contribute to the API documentation just make your changes to the inline documentation of the appropriate source code or rst file in a branch and submit a pull request. You might also use the GitHub Edit button.

Re-sync Spec Tests

If you would like to re-sync the copy of the specification tests in the PyMongo repository with that which is inside the specifications repo, please use the script provided in .evergreen/resync-specs.sh.:

git clone git@github.com:mongodb/specifications.git
export MDB_SPECS=~/specifications
cd ~/mongo-python-driver/.evergreen
./resync-specs.sh -b "connection-string*" crud bson-corpus
cd ..

The -b flag adds as a regex pattern to block files you do not wish to update in PyMongo. This is primarily helpful if you are implementing a new feature in PyMongo that has spec tests already implemented, or if you are attempting to validate new spec tests in PyMongo.