If you have an application already written in C or C++ (or another classic compiled language), you may want to embed Python as your application’s scripting language. To embed Python in languages other than C, the other language must be able to call C functions. In the following, I cover only the C view of things, since other languages vary widely regarding what you have to do in order to call C functions from them.
In order for Python scripts to communicate with your application, your application must supply extension modules with Python-accessible functions and classes that expose your application’s functionality. If these modules are linked with your application, rather than residing in dynamic libraries that Python can load when necessary, register your modules with Python as additional built-in modules by calling the
PyImport_AppendInittab C API function.
You may want to set the program name and arguments, which Python scripts can ...