https://www.python.org/dev/peps/pep-0008/?utm_medium=Exinfluencer&utm_source=Exinfluencer&utm_content=000026UJ&utm_term=10006555&utm_id=NA-SkillsNetwork-wwwcourseraorg-SkillsNetworkCoursesIBMDeveloperSkillsNetworkPY0222ENSkillsNetwork23455715-2021-01-01
记录学习，保存待查
