Python Fire is a Python library for automatically creating command line interfaces (CLIs) from absolutely any Python object.
Check it out at https://github.com/google/python-fire.
I originally wrote Python Fire after joining Google Brain in 2016. In March 2017 we open sourced the project, and I am proud and delighted by the growth and reception it has seen since.
To give it a try, simply
pip install fire, and then call
fire.Fire() as the main of any Python program.
Here’s a simple example to pique your interest, and then if you want to learn more, you should read the Python Fire Guide.
import fire def gcd(a, b): """Calculates the greatest common divisor of a and b.""" if a < b: a, b = b, a if b == 0: return a return gcd(a % b, b) if __name__ == '__main__': fire.Fire(gcd)
Saving this file as
gcdfire.py, we can run at the command line:
$ python gcdfire.py 45 50 5 $ python gcdfire.py 34 90 2
Just by calling Fire, we’ve turned our gcd function into a command line utility.
Fire works on functions, classes, objects, lists, etc. Any Python object at all will be turned into a sensible CLI just by calling
fire.Fire on it. Learn more from the