CFFI
CFFI (C Foreign Function Interface) is a Python library that provides a convenient and efficient way to call C code from Python. It allows developers to interface with C libraries and functions directly, supporting both in-line C code and pre-compiled libraries, with a focus on compatibility across different Python implementations like CPython and PyPy. It simplifies the process of creating Python bindings for C code without requiring extensive knowledge of the Python C API.
Developers should learn CFFI when they need to integrate high-performance C libraries into Python applications, such as for numerical computing, system-level programming, or leveraging existing C codebases. It is particularly useful in scenarios where performance is critical, as it enables direct access to C functions with minimal overhead, and it's a good choice for projects that require cross-Python implementation support, like PyPy, where traditional C extensions might not work.