| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| |
| class HashableDict(dict): |
| def __hash__(self): |
| try: |
| return hash(tuple(sorted(self.items()))) |
| except: |
| return hash(tuple(sorted(str(x) for x in self.items()))) |
| |
| @classmethod |
| def of(cls, o): |
| if isinstance(o, (tuple, set, list)): |
| return tuple([cls.of(e) for e in o]) |
| elif not isinstance(o, (dict, HashableDict)): |
| return o |
| |
| new_o = HashableDict() |
| for k, v in o.items(): |
| if isinstance(k, (set, list)): |
| new_o[tuple(k)] = cls.of(v) |
| else: |
| new_o[k] = cls.of(v) |
| return new_o |
| |