擅长:python、mysql、java
<p>可能是过度杀戮,但您可以使用<code>MutableMapping</code>实现一个模仿字典的类,这样您就可以拥有您建议的接口:</p>
<pre><code>from collections.abc import MutableMapping
class Dog:
def __init__(self, name):
self.name = name
def __repr__(self):
return str(self.name)
class MyDogs(MutableMapping):
def __init__(self, dog_names):
for name in dog_names:
self[name] = Dog(name)
def __getitem__(self, key):
return self.__dict__[key]
def __setitem__(self, key, value):
self.__dict__[key] = value
def __delitem__(self, key):
del self.__dict__[key]
def __iter__(self):
return iter(self.__dict__)
def __len__(self):
return len(self.__dict__)
my_dogs = MyDogs(['lassie', 'ollie'])
print(my_dogs.lassie)
print(my_dogs.ollie)
</code></pre>
<p>输出:</p>
<pre><code>'lassie'
'ollie'
</code></pre>