补充一点,老师说 tuple 不可变不是绝对的,比如这种 tuple (1, [1, 2]),那么 tuple 可以作为 dict 的 key 也不是绝对的,同上   tuple (1, [1, 2])
                
                    
                    2018-06-29
                
            
                                最赞回答 / 慕无忌5445318
                                
                                                            For iteration of this game I would recommend this to all the fans who are not to play with the bathroom and bathroom bathroom sink and sink master master bathroom sink sink 
                            
                        
                        2018-06-24
                
            
                                最新回答 / ve0
                                
                                                            因为 字典虽然是iterable,但是在迭代的时候,其返回的是key值,而非value值,所以要想使用的是dict的value值,可以像上面说的那样,使用dict的values(),因为该方法得到的是dict的value值的可迭代对象
                            
                        
                        2018-04-28
                
            title = ['a', 'b', 'c', 'b', 'c', 'c']
value_count = {}.fromkeys(title, 0)
for a in title:
value_count[a] += 1
print value_count
                value_count = {}.fromkeys(title, 0)
for a in title:
value_count[a] += 1
print value_count
                    
                    2018-04-26
                
            user_dict = {
"name":"bobby",
"age":29,
"height":175,
"edu": "master"
}
user = User._make(user_dict)
的结果是:
age name height edu
                "name":"bobby",
"age":29,
"height":175,
"edu": "master"
}
user = User._make(user_dict)
的结果是:
age name height edu
                    
                    2018-04-19