heading_number,heading_text
1,History
2,Design philosophy and features
3,Syntax and semantics
3.1,Indentation
3.2,Statements and control flow
3.3,Expressions
3.4,Methods
3.5,Typing
3.6,Arithmetic operations
4,Programming examples
5,Libraries
6,Development environments
7,Implementations
7.1,Reference implementation
7.2,Other implementations
7.3,Unsupported implementations
7.4,Cross-compilers to other languages
7.5,Performance
8,Development
9,API documentation generators
10,Naming
11,Uses
12,Languages influenced by Python
13,See also
14,References
14.1,Sources
15,Further reading
16,External links