Python Runtime Services
01. System-specific parameters and functions
02. Provide access to Python's configuration information
03. Built-in objects
04. Top-level code environment
05. Warning control
06. Data Classes
07. Utilities for with-statement contexts
08. Abstract Base Classes
09. Exit handlers
10. Print or retrieve a stack traceback
11. Garbage Collector interface
12. Inspect live objects
13. Site-specific configuration hook