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- This document describes how to make extensions to the Python interpreter using the CPython C API.
- Directly using the C API has many downsides - it is error prone to get the details correct, especially refcounting. It only works well on the CPython interpreter and not say PyPy or any future Python implementation. There are multiple solutions
- that are easier to use and don't involve coding directly the C API. We recommend using one of the following 3rd party extensions:
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- * Cython - incredibly popular in the numeric community, uses a language similar to Python with C level type
- annotations that directly compiles to C. Can be used to extend Python types.
- * cffi - the easy way to call C from Python without writing any C or learning a new language.
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- However, if you need to use the C API or if you are working on the CPython implementation itself, this document
- will describe how to do it.
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