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.. highlight:: c
.. _cporting-howto:
*************************************
Porting Extension Modules to Python 3
*************************************
We recommend the following resources for porting extension modules to Python 3:
* The `Migrating C extensions`_ chapter from
*Supporting Python 3: An in-depth guide*, a book on moving from Python 2
to Python 3 in general, guides the reader through porting an extension
module.
* The `Porting guide`_ from the *py3c* project provides opinionated
suggestions with supporting code.
* The `Cython`_ and `CFFI`_ libraries offer abstractions over
Python's C API.
Extensions generally need to be re-written to use one of them,
but the library then handles differences between various Python
versions and implementations.
.. _Migrating C extensions: http://python3porting.com/cextensions.html
.. _Porting guide: https://py3c.readthedocs.io/en/latest/guide.html
.. _Cython: https://cython.org/
.. _CFFI: https://cffi.readthedocs.io/en/latest/
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