python 父类子类
时间: 2023-10-03 19:06:09 浏览: 98
在Python中,可以使用关键字"class"定义一个类,使用关键字"pass"表示空类。定义一个子类时,可以在括号中填入要继承的父类,父类之间用逗号隔开。多继承的基本写法如下:class 子类(父类1, 父类2, ... , 父类n): pass。在多继承的情况下,如果父类中有相同的方法名,Python会按照从左到右的顺序搜索父类,即从括号中排在前面的父类开始搜索。如果在子类中未找到方法,会依次向右搜索父类,以找到对应的方法并进行调用。以下是一个示例,展示了继承和多继承的用法:
继承:
class Animal:
def __init__(self, name, year):
self.name = name
self.year = year
def tiger(self):
print(self.name, self.year)
class Animal1(Animal):
pass
zoo = Animal1('tiger', 10)
zoo.tiger()
多继承:
class A:
pass
class B:
pass
class C(A, B):
pass
以上代码中,Animal类是父类,Animal1类继承自Animal类。在多继承的情况下,C类同时继承了A类和B类的属性和方法。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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