25. 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:

• 25.1. sys — System-specific parameters and functions
• 25.2. sysconfig — Provide access to Python’s configuration information
  • 25.2.1. Configuration variables
  • 25.2.2. Installation paths
  • 25.2.3. Other functions
• 25.3. __builtin__ — Built-in objects
• 25.4. __main__ — Top-level script environment
• 25.5. warnings — Warning control
  • 25.5.1. Warning Categories
  • 25.5.2. The Warnings Filter
    • 25.5.2.1. Default Warning Filters
  • 25.5.3. Temporarily Suppressing Warnings
  • 25.5.4. Testing Warnings
  • 25.5.5. Updating Code For New Versions of Python
  • 25.5.6. Available Functions
  • 25.5.7. Available Context Managers
• 25.6. contextlib — Utilities for with-statement contexts
• 25.7. abc — Abstract Base Classes
• 25.8. atexit — Exit handlers
  • 25.8.1. atexit Example
• 25.9. traceback — Print or retrieve a stack traceback
  • 25.9.1. Traceback Examples
• 25.10. __future__ — Future statement definitions
• 25.11. gc — Garbage Collector interface
• 25.12. inspect — Inspect live objects
  • 25.12.1. Types and members
  • 25.12.2. Retrieving source code
  • 25.12.3. Classes and functions
  • 25.12.4. The interpreter stack
• 25.13. user — User-specific configuration hook