Python类的__getitem__和__setitem__特殊方法

>>> class testsetandget:kk = {};def __getitem__(self, key):return self.kk[key];def __setitem__(self, key, value):self.kk[key] = value;>>> a = testsetandget()>>> a['first'] = 1>>> a['first']1>>> a.__setitem__('second', 2)>>> a.__getitem__('second')2>>> a['second']2>>>