3007     PyBytesObject *it_seq; /* Set to NULL when iterator is exhausted */  member
3014     Py_XDECREF(it->it_seq);  in striter_dealloc()
3021     Py_VISIT(it->it_seq);  in striter_traverse()
3032     seq = it->it_seq;  in striter_next()
3045     it->it_seq = NULL;  in striter_next()
3054     if (it->it_seq)  in striter_len()
3055         len = PyBytes_GET_SIZE(it->it_seq) - it->it_index;  in striter_len()
3065     if (it->it_seq != NULL) {  in striter_reduce()
3067                              it->it_seq, it->it_index);  in striter_reduce()
3081     if (it->it_seq != NULL) {  in striter_setstate()
3084         else if (index > PyBytes_GET_SIZE(it->it_seq))  in striter_setstate()
3085             index = PyBytes_GET_SIZE(it->it_seq); /* iterator exhausted */  in striter_setstate()
3150     it->it_seq = (PyBytesObject *)seq;  in bytes_iter()