28. Python运行时服务

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 — 系统的具体参数和功能
• 28.2. sysconfig — 提供访问Python的配置信息
  • 28.2.1. Configuration variables
  • 28.2.2. Installation paths
  • 28.2.3. Other functions
  • 28.2.4. Using sysconfig as a script
• 28.3. builtins — 内置对象
• 28.4. __main__ — 顶层的脚本环境
• 28.5. warnings — 警告控制
  • 28.5.1. Warning Categories
  • 28.5.2. The Warnings Filter
    • 28.5.2.1. Default Warning Filters
  • 28.5.3. Temporarily Suppressing Warnings
  • 28.5.4. Testing Warnings
  • 28.5.5. Updating Code For New Versions of Python
  • 28.5.6. Available Functions
  • 28.5.7. Available Context Managers
• 28.6. contextlib — Utilities for with-statement contexts
  • 28.6.1. Utilities
  • 28.6.2. Examples and Recipes
    • 28.6.2.1. Supporting a variable number of context managers
    • 28.6.2.2. Simplifying support for single optional context managers
    • 28.6.2.3. Catching exceptions from __enter__ methods
    • 28.6.2.4. Cleaning up in an __enter__ implementation
    • 28.6.2.5. Replacing any use of try-finally and flag variables
    • 28.6.2.6. Using a context manager as a function decorator
• 28.7. abc — 抽象基类
• 28.8. atexit — 退出处理程序
  • 28.8.1. atexit Example
• 28.9. traceback — 打印或检索栈回溯
  • 28.9.1. Traceback Examples
• 28.10. __future__ — 未来的语句定义
• 28.11. gc — 垃圾收集器接口
• 28.12. inspect — 检查活动的对象
  • 28.12.1. Types and members
  • 28.12.2. Retrieving source code
  • 28.12.3. Introspecting callables with the Signature object
  • 28.12.4. Classes and functions
  • 28.12.5. The interpreter stack
  • 28.12.6. Fetching attributes statically
  • 28.12.7. Current State of a Generator
• 28.13. site — 站点特定的配置挂钩
• 28.14. fpectl — 浮点异常控制
  • 28.14.1. Example
  • 28.14.2. Limitations and other considerations
• 28.15. distutils — 构建和安装Python模块