Mailman 3 Any way to express that a dict is expected to have a key(s) but don't care about other keys? - Typing-sig

4 Mar 2020

      Looking at TypedDict it seems that it does not like the idea of superfluous keys existing in a dict. In my case I have a REST call returning JSON for an error and all I'm guaranteed is to get an "error" key. But there may be extra keys that provide more details about the specific error. Unfortunately I don't know the exhaustive list of keys so I can't use a TypedDict with `totality == False` to try to be complete.

I can't think of any way to somehow say "require/expect this one key, but other keys are OK". Am I missing anything that would let me do this?

Any way to express that a dict is expected to have a key(s) but don't care about other keys?

Brett Cannon

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