Steve Barnes - Why develop a CLI Command Line Interface first?

Published: 30 August 2018
on channel: EuroPython Conference

567

Why develop a CLI (Command Line Interface) first?
[EuroPython 2018 - Talk - 2018-07-26 - Lammermuir]
[Edinburgh, UK]

By Steve Barnes

One of the core concepts of Application Development, (not just in python), is the separation between the Business Logic and the User Interface. However there is a strong temptation to start with the user interface and add the business logic to it some methodologies emphasize this with the process of prototyping the (G)UI first. The danger is that your business logic code can get too entangled with the UI and a change of platform or framework becomes almost impossible.

This presentation will show how to maintain a clear separation between the Business Logic and the User Interface by starting with a command line interface using argparse and growing a GUI on top.

We will cover:
Why maintain the seperation
Using argparse
Adding a GUI layer with wxPython
Automating the GUI generation
Adding a web interface
Testing advantages of this approach
Scripting advantages
Some packaging models.

Slides and Samples all uploaded to https://github.com/GadgetSteve/EP2018...

License: This video is licensed under the CC BY-NC-SA 3.0 license: https://creativecommons.org/licenses/...
Please see our speaker release agreement for details: https://ep2018.europython.eu/en/speak...

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