如何給循環中的類實例屬性賦值

Question

class User: 
    num_of_user = 0 
    def __init__(self,name): 
     self.name = name 
     User.num_of_user += 1 

user_1 = User('A') 
user_2 = User('B') 
.... 

class Value(User): 
    def __init__(self,name,value): 
     User.__init__(self, name) 
     self.value = value 

# --> user_1.value = read a new manual input 
# --> user_2.value = read a new manual input 
.... 

我不熟悉如何在Class中正確呈現實例/屬性。

如何在For循環中寫上述註釋？

Answer 1

將所有創建的User_X實例添加到List/Array（users/userList）並遍歷它。

# step by step 
user_1 = User("A") 
user_2 = User("B") 
user_3 = User("C") 

users = [] 
users.append(user_1) 
users.append(user_2) 
users.append(user_3) 

# Better way with less instances 
users = [User("A"), User("B"), User("C")] 

現在你可以添加一個簡單的重複，如：

for user in users: 
    user.value = <SOME INPUT> 

Answer 2

這樣做，

class User: 
    num_of_user = 0 
    def __init__(self,name): 
     self.name = name 
     User.num_of_user += 1 

names = ['A','B','C','D'] 
users = [] 
for name in names: 
    users.append(User(name)) 

for user in users: 
    user.value = 'input from user'