Python Fire – library for automatically generating command line interfaces

Python Fire is a library for automatically generating command line interfaces (CLIs) from absolutely any Python object.

It’s called Fire because it fires off (executes) your command.

This is free and open source software.

Features include:

  • Simple way to create a CLI in Python. Simply write the functionality you want exposed at the command line as a function / module / class, and then call Fire. With this addition of a single-line call to Fire, your CLI is ready to go.
  • Helpful tool for developing and debugging Python code. If you simply call Fire in your library, then you can run all of it’s functionality from the command line without having to keep making changes to a main method.
  • Exploring existing code or turning other people’s code into a CLI. You can take an existing module, maybe even one that you don’t have access to the source code for, and call Fire on it. This lets you easily see what functionality this code exposes, without you having to read through all the code.
  • Makes transitioning between Bash and Python easier. Using Fire lets you call Python directly from Bash. So you can mix your Python functions with the unix tools you know and love, like grep, xargs, wc, etc.
  • Makes using a Python REPL easier by setting up the REPL with the modules and variables you’ll need already imported and created. When you use the –interactive flag to enter an IPython REPL, it starts with variables and modules already defined for you. You don’t need to waste time importing the modules you care about or defining the variables you’re going to use, since Fire has already done so for you.

Support: Documentation
Developer: Google Inc.
License: Apache License, Version 2.0

Python Fire is written in Python. Learn Python with our recommended free books and free tutorials.

Return to Command-Line Python Application Development Tools

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