Catalog ：

• Each preface ：
• Python function （ 5、 ... and ）
• • 1.1 Functional programming
  • • 1.1.1 Higher order function
    • 1.1.2 map() function
    • 1.1.3 reduce() function
    • 1.1.4 filter() function
    • 1.1.5 sorted() function
    • 1.1.6 Function as return value

Each preface ：

• The authors introduce ：【 Lonely and cold 】—CSDN High quality creators in the whole stack field 、HDZ Core group members 、 Huawei cloud sharing expert Python Full stack domain bloggers 、CSDN The author of the force program

• This article has been included in Python Full stack series column ：