'Return True if key_rd_dict is contained in the list of key_rd_dicts.'

def in_key_rd_dicts(self, key_rd_dict, key_rd_dicts):

    k = next(iter(key_rd_dict))
    v = key_rd_dict[k]
    for key_rd_dict in key_rd_dicts:
        for (key, val) in key_rd_dict.items():
            if ((key == k) and (val == v)):
                return True
    return False
