1. SyntaxError: Missing parentheses in call to 'print’

所有“print X” 更改為“print(X)”

2. 報錯：TypeError: ‘dict_keys’ object is not subscriptable

解決：self._G.node.keys()[:] 改為 list(self._G.node.keys())

3. 報錯：AttributeError: ‘collections.defaultdict’ object has no attribute 'itervalues’

解決：m.itervalues() 改為 m.values()

4. 報錯：AttributeError: module ‘string’ has no attribute 'atoi’

解決：v_i = string.atoi(s) 改為 v_i = int(s)

5. 報錯：TypeError: ‘dict_keys’ object does not support indexing

解決：將dict_keys()型別轉化為list

visit_sequence = self._G.keys()； random.shuffle(visit_sequence) 改為 visit_sequence = list(self._G.keys())； random.shuffle(visit_sequence)