Python C-API module exit handler - an atexit equivalent?

I'm using Python 开发者_开发知识库ver 2.6.4

There is a function I have to call from a C library when my extension module exits/is unloaded. What would be the equivalent of atexit for a C extension module?

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The Py_AtExit() function can be used to register up to 32 cleanup functions.