Contributing to PyTantan

For bug fixes or new features, please file an issue before submitting a pull request. If the change isn’t trivial, it may be best to wait for feedback.

Setting up a local repository

Make sure you clone the repository in recursive mode, so you also get the wrapped code of Tantan which is exposed as a git submodule:

$ git clone --recursive https://github.com/althonos/pytantan

Running tests

Tests are written as usual Python unit tests with the unittest module of the standard library. Running them requires the extension to be built locally:

$ python setup.py build_ext --debug --inplace
$ python -m unittest discover -vv

Coding guidelines

This project targets Python 3.5 or later.

Python objects should be typed; since it is not supported by Cython, you must manually declare types in type stubs (.pyi files). In Python files, you can add type annotations to function signatures (supported in Python 3.5) but not in variable assignments (supported only from Python 3.6 onward). However, Cython allows you to use f-strings even when compiling the code for Python 3.5.

Interfacing with C/C++

When interfacing with C or C++, and in particular with pointers, use assertions everywhere you assume the pointer to be non-NULL. Also consider using assertions when accessing raw C arrays, if applicable.