pub unsafe extern "C" fn PyArg_UnpackTuple(
arg1: *mut PyObject,
arg2: *const c_char,
arg3: Py_ssize_t,
arg4: Py_ssize_t,
...
) -> c_int
pub unsafe extern "C" fn PyArg_UnpackTuple(
arg1: *mut PyObject,
arg2: *const c_char,
arg3: Py_ssize_t,
arg4: Py_ssize_t,
...
) -> c_int