29. Python运行时服务¶
本章里描述的模块提供了和Python解释器及其环境交互相关的广泛服务。以下是综述：
- 29.1.
sys— 系统相关的参数和函数 - 29.2.
sysconfig— Provide access to Python’s configuration information - 29.3.
builtins— 内建对象 - 29.4.
__main__— 顶层脚本环境 - 29.5.
warnings—— 警告信息的控制 - 29.6.
contextlib— Utilities forwith-statement contexts- 29.6.1. 工具
- 29.6.2. 例子和配方
- 29.6.2.1. Supporting a variable number of context managers
- 29.6.2.2. Simplifying support for single optional context managers
- 29.6.2.3. Catching exceptions from
__enter__methods - 29.6.2.4. Cleaning up in an
__enter__implementation - 29.6.2.5. Replacing any use of
try-finallyand flag variables - 29.6.2.6. Using a context manager as a function decorator
- 29.6.3. Single use, reusable and reentrant context managers
- 29.7.
abc— 抽象基类 - 29.8.
atexit— 退出处理器 - 29.9.
traceback— 打印或检索堆栈回溯 - 29.10.
__future__— Future 语句定义 - 29.11.
gc— 垃圾回收器接口 - 29.12.
inspect— 检查对象 - 29.13.
site—— 站点专属的配置钩子 - 29.14.
fpectl— Floating point exception control