2314     PyByteArrayObject *it_seq; /* Set to NULL when iterator is exhausted */  member
2321     Py_XDECREF(it->it_seq);  in bytearrayiter_dealloc()
2328     Py_VISIT(it->it_seq);  in bytearrayiter_traverse()
2339     seq = it->it_seq;  in bytearrayiter_next()
2352     it->it_seq = NULL;  in bytearrayiter_next()
2361     if (it->it_seq) {  in bytearrayiter_length_hint()
2362         len = PyByteArray_GET_SIZE(it->it_seq) - it->it_index;  in bytearrayiter_length_hint()
2377     if (it->it_seq != NULL) {  in bytearrayiter_reduce()
2379                              it->it_seq, it->it_index);  in bytearrayiter_reduce()
2391     if (it->it_seq != NULL) {  in bytearrayiter_setstate()
2394         else if (index > PyByteArray_GET_SIZE(it->it_seq))  in bytearrayiter_setstate()
2395             index = PyByteArray_GET_SIZE(it->it_seq); /* iterator exhausted */  in bytearrayiter_setstate()
2460     it->it_seq = (PyByteArrayObject *)seq;  in bytearray_iter()