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Showing content from https://www.geeksforgeeks.org/python/using-c-codes-in-python-set-2/ below:

Using C codes in Python | Set 2

Last Updated : 11 Jul, 2025

Prerequisite:

In the

, we have discussed how to access C code in Python. Now, let's see how to access C functions.

import work

print ("GCD : ", work.gcd(35, 42))

print ("\ndivide : ", work.divide(42, 8))

print ("\navg : ", work.avg([1, 2, 3]))

p1 = work.Point(1, 2)
p2 = work.Point(4, 5)
print ("\ndistance : ", work.distance(p1, p2))

GCD : 7

divide : (5, 2)

avg : 2.0

distance : 4.242640687119285

Now the work done above has an issue that for the overall packaging of C and Python code together, using

to access C code that has been compiled, one has to make sure that the shared library gets placed in a location, where the

module can find it. One possibility is to put the resulting

file in the same directory as the supporting Python code. So, if the C library is installed elsewhere, then path has to be adjusted accordingly. If it is installed as a standard library on the machine, then

function can be used.

from ctypes.util import find_library

find_library('m')

find_library('pthread')

find_library('sample')

/usr/lib/libm.dylib

/usr/lib/libpthread.dylib

/usr/local/lib/libsample.so

Again,

won’t work at all if it can’t locate the library with the C code.

is used to load the C library, once it's location is known.

_mod = ctypes.cdll.LoadLibrary(_path)

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