目标：
1.父类，子类定义，以及子类调用父类
2.类的组合使用
3.内置功能
1）父类、子类以及调用父类
脚本内容如下：
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# 父类
class AddBook(object):
def __init__(self, name, phone):
self.name = name
self.phone = phone
def get_phone(self):
return self.phone
# 子类，继承
class EmplEmail(AddBook):
def __init__(self, nm, ph, email):
# AddBook.__init__(self, nm, ph) #调用父类方法一
super(EmplEmail, self).__init__(nm, ph) #调用父类方法二
self.email = email
def get_email(self):
return self.email
# 调用
if __name__ == "__main__":
Detian = AddBook(‘jack‘, ‘11223344556‘)
Meng = AddBook(‘lili‘, ‘11223344557‘)
print Detian.get_phone()
print AddBook.get_phone(Meng)
alice = EmplEmail(‘alice‘, ‘11223344558‘, ‘[email protected]‘)
print alice.get_email(), alice.get_phone()
2）类的组合使用
脚本内容如下：
#!/usr/bin/env python
# -*- coding: utf-8 -*-
‘‘‘
1.class类的组合使用
2.手机、邮箱、QQ等是可以变化的（定义在一起），姓名不可变（单独定义）。
3.在另一个类中引用
‘‘‘
class Info(object):
def __init__(self, phone, email, qq):
self.phone = phone
self.email = email
self.qq = qq
def get_phone(self):
return self.phone
def update_phone(self, newphone):
self.phone = newphone
print "手机号更改已更改"
def get_email(self):
return self.email
class AddrBook(object):
‘‘‘docstring for AddBook‘‘‘
def __init__(self, name, phone, email, qq):
self.name = name
self.info = Info(phone, email, qq)
if __name__ == "__main__":
Peng = AddrBook(‘jack‘, ‘11223344556‘, ‘[email protected]‘, ‘123456‘)
print Peng.info.get_phone()
Peng.info.update_phone(11223344559)
print Peng.info.get_phone()
print Peng.info.get_email()
3）内置功能(函数（）加与不加的区别）
脚本内容如下：
#!/usr/bin/env python
#coding: utf8
class Book(object):
def __init__(self,title,author):
self.title = title
self.author = author
def __str__(self):
return self.title
def __call__(self):
print "%s is written by %s" % (self.title,self.author)
if __name__ == ‘__main__‘:
pybook = Book("Core Python","Wesley")
print pybook #因为类中定义了__str__方法，此处打印出的内容是__str__的返回值。
pybook() #调用pybook就是执行__call__方法中的代码。