How do I interface to C++ objects from Python?
Depending on your requirements, there are many approaches. To do this manually, begin by reading Extending and Embedding the Python Interpreter. Realize that for the Python run-time system, there isn’t a whole lot of difference between C and C++ — so the strategy of building a new Python type around a C structure (pointer) type will also work for C++ objects.
If you don’t want to work at the Python C API level, you can use tools like Pyrex and SWIG. The former lets you write Python-like code for the interface, the latter uses special interface specifications to generate bindings for Python as well as several other languages.