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The following people have contributed sections to this document: Jim Fulton, Konrad Hinsen, Chris Phoenix, and Neil Schemenauer.
Python is an interpreted, object-oriented programming language. This document describes how to write modules in C or C++ to extend the Python interpreter with new modules. Those modules can define new functions but also new object types and their methods. The document also describes how to embed the Python interpreter in another application, for use as an extension language. Finally, it shows how to compile and link extension modules so that they can be loaded dynamically (at run time) into the interpreter, if the underlying operating system supports this feature.
This document assumes basic knowledge about Python. For an informal introduction to the language, see the Python Tutorial. The Python Reference Manual gives a more formal definition of the language. The Python Library Reference documents the existing object types, functions and modules (both built-in and written in Python) that give the language its wide application range.
For a detailed description of the whole Python/C API, see the separate Python/C API Reference Manual.