python中b类调用a类的方法_Python3基础A类作为B类的实例变量

Python : 3.7.0

OS : Ubuntu 18.04.1 LTS

IDE : PyCharm 2018.2.4

Conda : 4.5.11

typesetting : Markdown

code

"""

&＃64;Author : 行初心

&＃64;Date : 18-9-23

&＃64;Blog : www.cnblogs.com/xingchuxin

&＃64;Gitee : gitee.com/zhichengjiu

"""

class Girls:

def __init__(self, num):

self.num &＃61; num

class Boys:

def __init__(self, num):

self.num &＃61; num

class Class:

# 组合&＃xff0c;其他类的实例化&＃xff0c;在这里类的实例化中进行

def __init__(self, boy_num, girl_num):

self.boys &＃61; Boys(boy_num)

self.girls &＃61; Girls(girl_num)

def introduction(self):

print("班级共有", self.boys.num, "个男生")

print("班级共有", self.girls.num, "个女生")

def main():

my_class &＃61; Class(boy_num&＃61;20, girl_num&＃61;30)

my_class.introduction()

if __name__ &＃61;&＃61; &＃39;__main__&＃39;:

main()

result

/home/coder/anaconda3/envs/py37/bin/python /home/coder/PycharmProjects/oop/demo.py

班级共有 20 个男生

班级共有 30 个女生

Process finished with exit code 0

resource

[文档] docs.python.org/3

[规范] www.python.org/dev/peps/pep-0008

[规范] zh-google-styleguide.readthedocs.io/en/latest/google-python-styleguide/python_language_rules

[源码] www.python.org/downloads/source

[ PEP ] www.python.org/dev/peps

[平台] www.cnblogs.com

[平台] gitee.com

Python具有开源、跨平台、解释型、交互式等特性&＃xff0c;值得学习。

Python的设计哲学&＃xff1a;优雅&＃xff0c;明确&＃xff0c;简单。提倡用一种方法&＃xff0c;最好是只有一种方法来做一件事。

代码的书写要遵守规范&＃xff0c;这样有助于沟通和理解。

每种语言都有独特的思想&＃xff0c;初学者需要转变思维、踏实践行、坚持积累。