One common thing is to have arguments made of multiple words, for instance name of cat that can written in 3 commons way :

• nameofcat
• name_of_cat
• name-of-cat

While the first one is compatible with pretty much everything, the second one should be avoided in bash (https://stackoverflow.com/questions/1253679/should-command-line-options-in-posix-style-operating-systems-be-underscore-style) and the third one in python (https://stackoverflow.com/questions/2064329/why-does-python-disallow-usage-of-hyphens-within-function-and-variable-names).

The problem here is that by default fire will take arguments name from the python code, which means that if my python code looks like this:

script.py:

import fire
def main(name_of_cat='Steve'):
    print(f'The name of the cast is {name_of_cat}')
if __name__ == '__main__':
    fire.Fire(main)

then to call it from the command line (or from a bash script), one would do

python script.py --name_of_cat Bob

This is the way I'm using it at the moment, but this feels suboptimal. Any idea on what the best practice is here ?

PS : python script.py --name-of-cat Bob would be impossible since python can't have hyphen in variable names.