3052     PyBytesObject *it_seq; /* Set to NULL when iterator is exhausted */  member
3059     Py_XDECREF(it->it_seq);  in striter_dealloc()
3066     Py_VISIT(it->it_seq);  in striter_traverse()
3077     seq = it->it_seq;  in striter_next()
3090     it->it_seq = NULL;  in striter_next()
3099     if (it->it_seq)  in striter_len()
3100         len = PyBytes_GET_SIZE(it->it_seq) - it->it_index;  in striter_len()
3110     if (it->it_seq != NULL) {  in striter_reduce()
3112                              it->it_seq, it->it_index);  in striter_reduce()
3126     if (it->it_seq != NULL) {  in striter_setstate()
3129         else if (index > PyBytes_GET_SIZE(it->it_seq))  in striter_setstate()
3130             index = PyBytes_GET_SIZE(it->it_seq); /* iterator exhausted */  in striter_setstate()
3195     it->it_seq = (PyBytesObject *)seq;  in bytes_iter()