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45. ctypes Module

ctypes lets you call functions in DLLs or shared libraries directly from Python.

Example​

// square.c
int square(int x) { return x * x; }

Compile to shared library (.so or .dll).

import ctypes

lib = ctypes.CDLL("./square.so")
print(lib.square(5))

Wrap-Up​

ctypes provides a simple way to interface with C code without writing extensions.