Python abstract class, abstract method implementation, python Abstract

Python abstract class, abstract method implementation, python Abstract

Because python does not have abstract classes or interfaces, You need to implement the abc. py class library using the following methods:

 

From abc import ABCMeta, abstractmethod # Abstract class Headers (object): _ metaclass _ = ABCMeta def _ init _ (self): self. headers = ''@ abstractmethod def _ getBaiduHeaders (self): pass def _ str _ (self): return str (self. headers) def _ repr _ (self): return repr (self. headers) # implementation class BaiduHeaders (Headers): def _ init _ (self, url, username, password): self. url = url self. headers = self. _ getBaiduHeaders (username, password) def _ getBaiduHeaders (self, username, password): client = GLOBAL_SUDS_CLIENT.Client (self. url) headers = client. factory. create ('ns0: authheader') headers. username = username headers. password = password headers. token = _ baidu_headers ['Token'] return headers

If the subclass does not implement the _ getBaiduHeaders method of the parent class, a TypeError: Can't instantiate abstract class BaiduHeaders with abstract methods exception is thrown.