Contents

• python的根类

  • __str__()

  • __eq__()

7.10. python的根类

python的所有类都直接或间接继承object类，它是所有类的“祖先”。 object有很多方法，主要学习两个方法

• __str__()：返回该对象的字符串表示

• __eq__(other):指示其他某个对象是否与此对象“相等”

7.10.1. __str__()

#!/usr/bin/env python
# -*- coding:utf8 -*-
# auther; 18793
# Date：2019/5/18 8:10
# filename: str方法.py
class Person(object):
    def __init__(self, name, age):
        self.name = name
        self.age = age

    def __str__(self):
        template = "Person [name={0},age={1}]"
        s = template.format(self.name, self.age)
        return s


person = Person("hujianli", 18)
print(person)

7.10.2. __eq__()

#!/usr/bin/env python
#-*- coding:utf8 -*-
# auther; 18793
# Date：2019/5/18 8:14
# filename: eq方法.py

class Person(object):
    def __init__(self, name, age):
        self.name = name
        self.age = age

    def __str__(self):
        template = "Person [name={0},age={1}]"
        s = template.format(self.name, self.age)
        return s

    def __eq__(self, other):
        if self.age == other.age and self.name == other.name:
            return True
        else:
            return False


person1 = Person("hujianli", 18)
person2 = Person("hujianli", 18)
print(person1 == person2)