时间：2021-08-10 09:24:43 | 栏目：Python代码 | 点击：次
如下所示：
import collections
class Mydict(collections.UserDict):
def __missing__(self, key):
if isinstance(key, str):
raise KeyError(key)
return self[str(key)]
def __contains__(self, key):
return str(key) in self.data
def __setitem__(self, key, item):
self.data[str(key)] = item
def __getattr__(self, key):
return self.data[str(key)]
if __name__ == '__main__':
mydict = Mydict((('a',1),('c',('d',3)),('b',2)))
print(mydict)
print(mydict.a)
print(mydict['a'])