Neat, though that's not in the standard library.

The current logic for getting a handle to libc could also be simplified via ctypes.util.find_library (https://docs.python.org/3/library/ctypes.html#finding-shared-libraries).

Darwin:

    >>> import ctypes.util
    >>> ctypes.util.find_library('c')
    '/usr/lib/libc.dylib'
    
Linux:

    >>> import ctypes.util
    >>> ctypes.util.find_library('c')
    'libc.so.6'