pub unsafe extern "C" fn PyUnicode_Count(
str: *mut PyObject,
substr: *mut PyObject,
start: Py_ssize_t,
end: Py_ssize_t,
) -> Py_ssize_t
pub unsafe extern "C" fn PyUnicode_Count(
str: *mut PyObject,
substr: *mut PyObject,
start: Py_ssize_t,
end: Py_ssize_t,
) -> Py_ssize_t