A Interactive Input Editing and History Substitution
Some versions of the Python interpreter support editing of the current
input line and history substitution, similar to facilities found in
the Korn shell and the GNU Bash shell. This is implemented using the
GNU Readline library, which supports Emacs-style and vi-style
editing. This library has its own documentation which I won't
duplicate here; however, the basics are easily explained. The
interactive editing and history described here are optionally
available in the UNIX and CygWin versions of the interpreter.
This chapter does not document the editing facilities of Mark
Hammond's PythonWin package or the Tk-based environment, IDLE,
distributed with Python. The command-line history recall which
operates within DOS boxes on NT and some other DOS and Windows flavors
is yet another beast.