This is a regular Python program that will call the integrate_f function found in num.pyx. Python code “sees” compiled Cython code as just another module, so you don’t need to do anything ...

A Python module is an external class or set of functions that exist outside the main file of your program. This can be something that you built yourself, or it can be provided by the community.

Python’s development team chose defaults that reflect the most common real-world scenarios. But if you do need to tweak the way garbage collection works, you can use Python’s gc module .