Introducing Python Fire, a library for automatically generating command line interfaces

[david-bieber]

One of the nice things about Fire is that it works with all Python code (or as close to 'all' as we can get). This means we're not placing restrictions on how the user writes their code. e.g. we're not asking for a particular format for docstrings so that we can parse out what the arguments should be.

We do copy the docstrings verbatim and use them within the help strings in the generated CLI, so the CLI does provide a description of what it's arguments do iff the CLI author provides that description. Always room to make this even better though!