Python catalog set

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1. Python Introduction and Installation
2. Python three kinds of implementation
3. Variable and variable calculation and references
4. if, elif, else, and if nested
5. Operators
6. Loop and loop nests
7. Nested function and other functions
8. Advanced function parameters and return values ​​of
9. List list []
10. Import module import
11. String and slice
12. Tuple () {} and dictionaries
13. Public method container type
14. Object-oriented OO P
15. Package
16. inherit
17. Polymorphism
18. Class attribute class method static method
19. abnormal
20. Modules and packages
21. File operations and file encoding