Command-line interface libraries
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Moduły opisane w tym rozdziale pomagaja w implementacji interfejsów
wiersza poleceń i terminala dla aplikacji.

Oto przegląd:

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

* "optparse" --- Parser for command line options

* "getpass" --- Portable password input

* "fileinput" --- Iterate over lines from multiple input streams

* "curses" --- Terminal handling for character-cell displays

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

* "curses.ascii" --- Utilities for ASCII characters

* "curses.panel" --- A panel stack extension for curses

* "cmd" --- Support for line-oriented command interpreters
