functional syntax for enum not implemented

[dlinnemeyer]

https://docs.python.org/3/library/enum.html#functional-api

I'm getting Too many arguments for "Enum" from mypy. I'm guessing it needs an __init__ function?

Not sure how this should be handled. It's dynamic, so I take it there's no real way to provide type safety for this syntax? But maybe something should be done to not throw an error when it is used?

[gvanrossum]

I believe that this is actually a deficiency in mypy's special-casing of enums. As long as the argument is a literal (not a dynamically constructed string) this could be made to work by special-casing this. See e.g. python/mypy#529 (comment)

I'm closing this here because I don't think a change to typeshed would be sufficient (though it might be needed too).

[MartinThoma]

I'm confused by this issue. I currently run into the same error (Too many arguments for "Enum"). What should I do?

System Info

• Python 3.8.1
• mypy==0.781

[JelleZijlstra]

@MartinThoma mypy supports at least some versions of the functional enum API (python/mypy#2805). If some variation doesn't work for you yet, you should report an issue to mypy (not typeshed) with the exact code that is not working.