veyepar: A Hands-On Guide to Building Interactive Command-Line Apps with cmd2

Author(s):	Todd Leonhardt, Kevin Van Brunt
Location	Hays Cape
Date	jul Sat 27	Days Raw Files
Start	July 27, 2019, 2 p.m.	First Raw Start	July 19, 2019, 10:46 p.m.
Duration	0:45:0	Offset	7 days, 15:13:36
End	July 27, 2019, 2:45 p.m.	Last Raw End	July 20, 2019, 12:16 a.m.
Chapters	00:00 0:28:11
Total cuts_time	46 min.

https://www.pyohio.org/2019/presentations/68
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Interactive command-line applications (CLIs) are used extensively in many real-world scenarios, particularly in the DevOps and Security communities as well as for internal developer tooling and automation.  I'm sure many of you have used the wonderful [ipython](https://ipython.org) interactive Python shell which is a good example of a CLI.  Python has the built-in [cmd](https://docs.python.org/3/library/cmd.html) library for creating CLIs, but it is extremely bare-bones.  The [cmd2](https://github.com/python-cmd2/cmd2) package is a batteries-included extension of `cmd` which makes it much quicker and easier to create feature-rich and user-friendly CLIs.

The presentation will first explain how to install `cmd2`.  The talk will next show how to create a basic `cmd2` application.  Then the talk will progressively add features to this application while demonstrating the capabilities built into `cmd2`.  In the end, the presentation will show how to build a basic but feature-rich and user-friendly CLI application from scratch. This application will include many features which make it easy to use for customers, including:

* Built-in help
* Top-notch tab-completion
* Shell-like functionality including ability to run shell commands, pipe to shell commands, and redirect output to files
* Built-in application scripting
* Built-in Python scripting
* Built-in history
* Command aliases and macros

Ultimately, people who attend this talk will learn how to use the Python programming language with the `cmd2` package to quickly and efficiently build their own interactive command-line applications.

Interactive command-line (CLI) applications are extremely popular in the DevOps and Security communities as well as for internal tooling and automation.  Have you ever wanted to build an awesome CLI application using Python but don't know where to get started?   This talk will show you how to use the cmd2 package to quickly and easily build feature-rich and user-friendly CLI apps in Python.

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