64 bit - Is Python's ctypes.c_long 64 bit on 64 bit systems?

Question

In C, long is 64 bit on a 64 bit system. Is this reflected in Python's ctypes module?

Answer 1

The size of long depends on the memory model. On Windows (LLP64) it is 32-bit, on UNIX (LP64) it is 64-bit.

If you need a 64-bit integer, use c_int64.

If you need a pointer-sized integer, use c_void_p (“The value is represented as integer”).