selectors — 高级 I/O 复用 ¶

Added in version 3.4.

源代码： Lib/selectors.py

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介绍 ¶

此模块允许高级且高效的 I/O 复用，构建于 select 模块原语。鼓励用户使用此模块取而代之，除非想要精确控制所用的 OS 级别原语。

它定义 BaseSelector 抽象基类，除了几个具体实现 ( KqueueSelector , EpollSelector …), that can be used to wait for I/O readiness notification on multiple file objects. In the following, “file object” refers to any object with a fileno() method, or a raw file descriptor. See 文件对象 .

DefaultSelector is an alias to the most efficient implementation available on the current platform: this should be the default choice for most users.

注意

The type of file objects supported depends on the platform: on Windows, sockets are supported, but not pipes, whereas on Unix, both are supported (some other types may be supported as well, such as fifos or special file devices).

另请参阅

select

低级 I/O 复用模块。

可用性 ：非 WASI。

This module does not work or is not available on WebAssembly. See WebAssembly 平台 了解更多信息。

类 ¶

类层次结构：

BaseSelector
+-- SelectSelector
+-- PollSelector
+-- EpollSelector
+-- DevpollSelector
+-- KqueueSelector