蟒蛇OOP：扩展分类

-1

版本：python3.6.1蟒蛇OOP：扩展分类

源代码：

class ContactList(list): 
    def search(self,name): 
    '''Return all contacts that contain the search value in their name.''' 
     matching_contacts = [] 
     for contact in self: 
      if name in contact.name: 
       matching_contacts.append(contact) 
      return matching_contacts 

class Contact: 
    all_contacts = ContactList() 
    def __init__(self,name,email): 
     self.name = name 
     self.email = email 
     Contact.all_contacts.append(self)

然后在IDLE

c1 = Contact("John A","[email protected]") 
c2 = Contact("John B","[email protected]") 
c3 = Contact("Jenna C","[email protected]") 
[c.name for c in Contact.all_contacts.search('John')]

运行的结果应该是['John A','John B']，但我的空闲秀我['John A']

我想弄清楚我的代码有什么问题吗？

来源

2017-06-20 Jason liu

为什么联系人首先知道联系人列表？ –

不要从内置的扩展，使用ABC模块。 –

'return matching_contacts'的缩进是错误的;它需要*在循环之外*。 – deceze

那么，那是因为你的“回报”处于错误的位置。

class ContactList(list): 
def search(self,name): 
'''Return all contacts that contain the search value in their name.''' 
    matching_contacts = [] 
    for contact in self: 
     if name in contact.name: 
      matching_contacts.append(contact) 
    return matching_contacts

来源

2017-06-20 10:09:19 MORROWIND

蟒蛇OOP：扩展分类

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