3060     PyBytesObject *it_seq; /* Set to NULL when iterator is exhausted */  member
3067     Py_XDECREF(it->it_seq);  in striter_dealloc()
3074     Py_VISIT(it->it_seq);  in striter_traverse()
3085     seq = it->it_seq;  in striter_next()
3098     it->it_seq = NULL;  in striter_next()
3107     if (it->it_seq)  in striter_len()
3108         len = PyBytes_GET_SIZE(it->it_seq) - it->it_index;  in striter_len()
3119     if (it->it_seq != NULL) {  in striter_reduce()
3121                              it->it_seq, it->it_index);  in striter_reduce()
3135     if (it->it_seq != NULL) {  in striter_setstate()
3138         else if (index > PyBytes_GET_SIZE(it->it_seq))  in striter_setstate()
3139             index = PyBytes_GET_SIZE(it->it_seq); /* iterator exhausted */  in striter_setstate()
3204     it->it_seq = (PyBytesObject *)seq;  in bytes_iter()