Load C module helper function

load_c_module.py

def load_module():
    # load library
    cmodule = ctypes.cdll.LoadLibrary('./levenshtein.so')
    # define arguments type
    cmodule.levenshtein.argtypes = [ctypes.c_char_p, 
                                    ctypes.c_char_p, 
                                    ctypes.c_int, 
                                    ctypes.c_int, 
                                    ctypes.c_int]
    # define return type
    cmodule.levenshtein.restype = ctypes.c_int
    return cmodule