如何在Python中调用C函数

int myFunction(int num) 
{ 
 if (num == 0) 
 
 //如果number为0，则不执行任何操作。 
 return 0; 
 else
 // 如果number是2的幂，则返回1，否则返回0
 
 num & (num - 1) == 0 ? return 1 : return 0 
}

cc -fPIC -shared -o libfun.so function.c

import ctypes 
NUM = 16 
# libfun loaded to the python file 
# using fun.myFunction(), 
# C function can be accessed 
# but type of argument is the problem. 
 
fun = ctype.CDLL(libfun.so) 
# Now whenever argument 
# will be passed to the function 
# ctypes will check it. 
 
fun.myFunction.argtypes(ctypes.c_int) 
 
# now we can call this 
# function using instant (fun) 
# returnValue is the value 
# return by function written in C 
# code 
returnVale = fun.myFunction(NUM)