Networking and Interprocess Communication
*****************************************

The modules described in this chapter provide mechanisms for
networking and inter-processes communication.

Some modules only work for two processes that are on the same machine,
e.g. "signal" and "mmap".  Other modules support networking protocols
that two or more processes can use to communicate across machines.

The list of modules described in this chapter is:

* "asyncio" --- 非同步 I/O

* "socket" --- 低階網路介面

* "ssl" --- socket 物件的 TLS/SSL 包裝器

* "select" --- 等待 I/O 完成

* "selectors" --- 高階 I/O 多工

* "signal" --- 設定非同步事件的處理函式

* "mmap" --- 記憶體映射檔案的支援
