I also (with others) prefer `else:` or perhaps `case else:` to using
the`_` variable.
The latter is obscure, and woudn't sit well with code that already
uses that variable for its own purposes.
I think that's done for consistency. '_' is a wildcard and you can have:
case (_, _):
to match any 2-tuple, so:
case _:
would match any value, and can thus already serve as the default.
Consistency with what? Where else is `_` currently used as a wildcard?
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