python笔记：2.1.2.1实例方法_python中2.1-2-优快云博客

本文链接：https://blog.youkuaiyun.com/bq_cui/article/details/90144616

本文通过定义两个不同的类，展示了Python中类与对象的基本用法。首先，创建了一个具有静态属性和方法的简单人类，然后使用该类创建了一个实例并调用了其方法。接着，重新定义了人类，增加了构造函数，允许在创建实例时传入参数，并通过另一个实例展示了如何使用这些参数。

# -*- coding: utf-8 -*-
"""
Created on Sun May 12 15:17:57 2019

@author: User
"""

class Human(object):
    kingdom = 'Animalia'
    phylum = 'Chordata'
    order = 'Primates'
    family = 'Human Bing'
    def typewrite(self):
        print('This is %s typing words!' %self.family)
    def add(self, n1, n2):
        n = n1 + n2
        print(str(n1) + '+' + str(n2) + '+' + str(n))
        print('You see! %s can calculate!' %self.family)
        
ZhangSan = Human()
print(ZhangSan.typewrite())
print(ZhangSan.add(1, 1))   

#重新声明 human类，具有方法
print('\n2------------------\n')
class Human2(object):
    
    domain = 'eukarya'
    def __init__(self, kingdom='Animalia',phylum='Chordata',
                order='Primates',family='Human Being'):
        self.kingdom = kingdom
        self.phylum=phylum
        self.order = order
        self.family = family
    
    
    def typewrite(self):
        print('This is %s typing words!' %self.family)
    def add(self, n1, n2):
        n = n1 + n2
        print(str(n1) + '+' + str(n2) + '+' + str(n))
        print('You see! %s can calculate!' %self.family)
        
        
ZhangSan2 = Human2()
LiSi = Human2(kingdom='Animal', family = 'Homo')
print(LiSi.kingdom)
print(LiSi.family)
print(ZhangSan.kingdom)

运行：

This is Human Bing typing words!
None
1+1+2
You see! Human Bing can calculate!
None

2------------------

Animal
Homo
Animalia