27. 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:

• 27.1. sys — System-specific parameters and functions
• 27.2. sysconfig — Provide access to Python’s configuration information
  • 27.2.1. Configuration variables
  • 27.2.2. Installation paths
  • 27.2.3. Other functions
• 27.3. __builtin__ — Built-in objects
• 27.4. future_builtins — Python 3 builtins
• 27.5. __main__ — Top-level script environment
• 27.6. warnings — Warning control
  • 27.6.1. Warning Categories
  • 27.6.2. The Warnings Filter
    • 27.6.2.1. Default Warning Filters
  • 27.6.3. Temporarily Suppressing Warnings
  • 27.6.4. Testing Warnings
  • 27.6.5. Updating Code For New Versions of Python
  • 27.6.6. Available Functions
  • 27.6.7. Available Context Managers
• 27.7. contextlib — Utilities for with-statement contexts
• 27.8. abc — Abstract Base Classes
• 27.9. atexit — Exit handlers
  • 27.9.1. atexit Example
• 27.10. traceback — Print or retrieve a stack traceback
  • 27.10.1. Traceback Examples
• 27.11. __future__ — Future statement definitions
• 27.12. gc — Garbage Collector interface
• 27.13. inspect — Inspect live objects
  • 27.13.1. Types and members
  • 27.13.2. Retrieving source code
  • 27.13.3. Classes and functions
  • 27.13.4. The interpreter stack
• 27.14. site — Site-specific configuration hook
• 27.15. user — User-specific configuration hook
• 27.16. fpectl — Floating point exception control
  • 27.16.1. Example
  • 27.16.2. Limitations and other considerations
• 27.17. distutils — Building and installing Python modules