['__class__','__contains__','__delattr__','__delitem__','__dir__','__doc__','__eq__','__format__','__ge__','__getattribute__','__getitem__','__gt__','__hash__','__init__','__iter__','__le__','__len__','__lt__','__ne__', '__new__','__reduce__','__reduce_ex__','__repr__','__setattr__','__setitem__','__sizeof__','__str__', '__subclasshook__', 'Clear','Copy','Fromkeys','Get','Items','Keys','Pop','Popitem','SetDefault','Update','Values']my_dict= { 'User1':"Zhangsan", 'User2':"Lisi", 'User3':"Wangermazi",}Print(my_dict)#{' user2 ': ' Lisi ', ' user3 ': ' Wangermazi ', ' user1 ': ' Zhangsan '}, unordered outputmy_dict['User4'] ="Xiaotaoqi"Print(my_dict)#{' User3 ': ' Wangermazi ', ' user4 ': ' Xiaotaoqi ', ' user2 ': ' Lisi ', ' user1 ': ' Zhangsan '}, addmy_dict['User1'] ="Zhangsan"Print(my_dict)#{' User3 ': ' Wangermazi ', ' user2 ': ' Lisi ', ' user4 ': ' Xiaotaoqi ', ' user1 ': ' Zhangsan '}, modify#Delete three-way Pop,del,popitemMy_dict.pop ("User1")Print(my_dict)#{' user2 ': ' Lisi ', ' user3 ': ' Wangermazi ', ' user4 ': ' Xiaotaoqi '}delmy_dict['User2']Print(my_dict)#{' User3 ': ' Wangermazi ', ' user4 ': ' Xiaotaoqi '}My_dict.popitem ()Print(my_dict)#{' user2 ': ' Lisi ', ' user3 ': ' Wangermazi ', ' user1 ': ' Zhangsan '} City= { '1':{ 'Beijing':{ 'Chaoyang':"Xizhimen", 'Haidian':'Xibeiwang', 'Tongzhou':'Shuxi' } }, '2':"Shanghai", '3':"Liaoning"}Print(city['1']['Beijing']['Haidian'])#XibeiwangPrint(City.keys ())#Dict_keys ([' 1 ', ' 2 ', ' 3 '])Print(City.values ())#dict_values ([{' Beijing ': {' Haidian ': ' Xibeiwang ', ' Tongzhou ': ' Shuxi ', ' Chaoyang ': ' Xizhimen '}}, ' Shanghai ', ' Liaoning '])Print(City.items ())#Dict_items ([' 3 ', ' Liaoning '), (' 2 ', ' Shanghai '), (' 1 ', {' Beijing ': {' Tongzhou ': ' Shuxi ', ' Chaoyang ': ' Xizhimen ', ' Haidian ': ' Xibeiwang '})])
Python Practical dict Simple Practice