28. Python Runtime Services

The modules described in this chapter provide a wide range of services related to the Python interpreter and its interaction with its environment. Here’s an overview:

• 28.1. sys — System-specific parameters and functions
• 28.2. sysconfig — Provide access to Python’s configuration information
  • 28.2.1. Configuration variables
  • 28.2.2. Installation paths
  • 28.2.3. Other functions
• 28.3. __builtin__ — Built-in objects
• 28.4. future_builtins — Python 3 builtins
• 28.5. __main__ — Top-level script environment
• 28.6. warnings — Warning control
  • 28.6.1. Warning Categories
  • 28.6.2. The Warnings Filter
    • 28.6.2.1. Default Warning Filters
  • 28.6.3. Temporarily Suppressing Warnings
  • 28.6.4. Testing Warnings
  • 28.6.5. Updating Code For New Versions of Python
  • 28.6.6. Available Functions
  • 28.6.7. Available Context Managers
• 28.7. contextlib — Utilities for with-statement contexts
• 28.8. abc — Abstract Base Classes
• 28.9. atexit — Exit handlers
  • 28.9.1. atexit Example
• 28.10. traceback — Print or retrieve a stack traceback
  • 28.10.1. Traceback Examples
• 28.11. __future__ — Future statement definitions
• 28.12. gc — Garbage Collector interface
• 28.13. inspect — Inspect live objects
  • 28.13.1. Types and members
  • 28.13.2. Retrieving source code
  • 28.13.3. Classes and functions
  • 28.13.4. The interpreter stack
• 28.14. site — Site-specific configuration hook
• 28.15. user — User-specific configuration hook
• 28.16. fpectl — Floating point exception control
  • 28.16.1. Example
  • 28.16.2. Limitations and other considerations