| def invert_dict(dict): | |
| rv = {} | |
| for key, values in dict.items(): | |
| for value in values: | |
| if value in rv: | |
| raise ValueError | |
| rv[value] = key | |
| return rv | |
| class HTTPException(Exception): | |
| def __init__(self, code, message=""): | |
| self.code = code | |
| self.message = message |