My team has just spent 20 minutes trying to work out if this library is satire.

I love functional programming (use Elixir at work a fair amount), but almost every one of these examples is harder to read than than the equivalent "classic" Python (https://returns.readthedocs.io/en/latest/).

Plus, if you're going to write Python then deviating majorly from the normal approaches is going to require maintainers to learn a whole new way of doing things. Given the tools that Python provides, I don't think that's worth it for the benefit. Perhaps for some specific applications?