#ContentsToC = { '1. Collections': [List, Dictionary, Set, Tuple, Range, Enumerate, Iterator, Generator], '2. Types': [Type, String, Regular_Exp, Format, Numbers, Combinatorics, Datetime], '3. Syntax': [Args, Inline, Import, Decorator, Class, Duck_Types, Enum, Exception], '4. System': [Exit, Print, Input, Command_Line_Arguments, Open, Path, OS_Commands], '5. Data': [JSON, Pickle, CSV, SQLite, Byte