How to start? (CALL FOR COMMUNITY ARTICLES) #348

Short description

I'm trying to get into using dephell but the lack of a minimal working example is hindering my grokking it.

I was going here as it's the first example:

https://dephell.readthedocs.io/use-warehouse.html

and tried to execute the first line:

dephell inspect config --filter="warehouse"
WARNING cannot find config file
ERROR KeyError: '"warehouse"'

which I guess means that this example is not self-consistent? I fail to fully understand how to productively start with dephell currently.
Would it be easiest/fastest to start from a working setup.py file?

I learn mostly by example, so I think what would be really helpful for people getting into it would be a set of the following tutorials:

1. Minimal example using only dephell to make a package installable
2. Make it distributable via pypi
3. Add conda package generation.

At least in my world (astronomy/planetary), pypi and conda are the most used way to disseminate new packages.