cmd2 is an extension of cmd, the Python Standard Library’s module for
creating simple interactive command-line applications.
cmd2 can be used as a drop-in replacement for cmd. Simply importing cmd2
in place of cmd will add many features to an application without any further
Understanding the use of cmd is the first step in learning the use of cmd2.
Once you have read the cmd docs, return here to learn the ways that cmd2
differs from cmd.