被继承的是父类、基类
通过继承创建的类是 子类或者派生类
最简单的继承
class School_member(object):
def __init__(self,name,age,sex): #构造函数
self.name = name
self.age = age
self.sex = sex
def talk(self):
info = """
---------%s---------
my name is %s
my age is %s
my sex is %s
"""%(self.name,self.name,self.age,self.sex)
print(info)
class Teacher(School_member): #继承
pass
A = Teacher("dailiang",23,"male")
A.talk()
子类也可以有自己的方法：
class School_member(object):
def __init__(self,name,age,sex): #构造函数
self.name = name
self.age = age
self.sex = sex
def talk(self):
info = """
---------%s---------
my name is %s
my age is %s
my sex is %s
"""%(self.name,self.name,self.age,self.sex)
print(info)
class Teacher(School_member): #继承
def teching(self):
print("%s is teaching python" %self.name)
A = Teacher("dailiang",23,"male")
A.teching() #dailiang is teaching python
子类增加参数：
class School_member(object):
def __init__(self,name,age,sex): #构造函数
self.name = name
self.age = age
self.sex = sex
def talk(self):
info = """
---------%s---------
my name is %s
my age is %s
my sex is %s
"""%(self.name,self.name,self.age,self.sex)
print(info)
class Student(School_member):
def __init__(self, name, age, sex,amount): # #如果继承之后，要增加新的属性，需要把父类的参数也添加上
School_member.__init__(self,name,age,sex) #继承父类的参数
#也可以这样写super(Student, self).__init__(name, age, sex)
self.amount = amount
A = Student("gangsi",73,"male",10000)
print(A.amount) #10000
print(A.talk())
重构父类方法：
class School_member(object):
def __init__(self,name,age,sex): #构造函数
self.name = name
self.age = age
self.sex = sex
def talk(self):
info = """
---------%s---------
my name is %s
my age is %s
my sex is %s
"""%(self.name,self.name,self.age,self.sex)
print(info)
class Student(School_member):
def __init__(self, name, age, sex,amount):
super(Student, self).__init__(name, age, sex)
self.amount = amount
def talk(self): #overwriten 重构了父类的talk方法
print("%s is teaching python,she's amount is %s"%(self.name,self.amount))
A = Student("gangsi",73,"male",10000)
print(A.amount) #10000
print(A.talk()) ##gangsi is teaching python,she's amount is 10000
多继承
class Animal(object):
def sleep(self):
print("---------sleep---------")
def eat(self):
print("-------eat-------------")
class horse(Animal):
def run(self):
print("-------run fast-------")
class lv(Animal):
def work(self):
print("-------work hard----")
class luozi(horse,lv): #多继承
pass
A = luozi()
print(A.run()) # -------run fast-------
print(A.work()) #-------work hard----
