I'll do better in future, I promise! :)
What's the deal with making args.nvr a list then requiring it to be
exactly one item long?
I thought that's how argparser always works, returning a list for positional
arguments. And it does it only if you use nargs. Thanks, fixed.
> A bit more complicated than I expected. But now we can simplify the
> instructions to this:
> What do you think?
OK, I'll push the changes live.