python __getitem__() __setitem__() 方法

class GxfDict:def __init__(self):self.data ={}def __getitem__(self, key):return self.data[key]def __setitem__(self, key, value):self.data[key] = valuegxf_dict = GxfDict()
gxf_dict['name'] = 'gxf'
print(gxf_dict['name'])