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Prerequisites

  1. Familiarity with Pipenv. See here for my post on Pipenv.

Getting started

Let’s create the hello-fire directory and install python-fire.

The CLI script

For our demo example, we are going to take a slightly modified version of grouping commands script to demo how to run subcommands.

Adding the code

We set the base commands through the Pipeline class and the subcommands through their own class that is initiated as properties of the Pipeline class.

Running the script

To run the script, we need to ensure we are running the Pipenv virtual environment.

Summary

Today’s post demonstrated how to use the python-fire package to write easier CLI scripts with their own subcommands and instance-managed state.

Resources and further reading

  1. The ABCs of Pipenv for the minimum you will need.
  2. Hello, JupyterLab.
  3. Python Fire
  4. Pipenv

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Senior Engineer @ UsabilityHub. Formerly Culture Amp.

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Dennis O'Keeffe

Dennis O'Keeffe

Senior Engineer @ UsabilityHub. Formerly Culture Amp.

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