Command Line Interface Libraries
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The modules described in this chapter assist with implementing command
line and terminal interfaces for applications.

Here's an overview:

* "argparse" --- Parser for command-line options, arguments and
  subcommands

* "optparse" --- 命令列選項剖析器

* "getpass" --- 可攜式密碼輸入工具

* "fileinput" --- 逐列疊代多個輸入串流

* "curses" --- 字元儲存格顯示的終端處理

* "curses.textpad" --- Text input widget for curses programs

* "curses.ascii" --- ASCII 字元的工具程式

* "curses.panel" --- curses 的面板堆疊擴充
