Make EmptyCriterion inherit from Criterion #605
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Otherwise, type checkers are confused. Plus, it makes logical sense.
gl3nn
approved these changes
Jun 16, 2021
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Otherwise, type checkers are confused. Plus, it makes logical sense; my assumption is this omission was just an oversight.
I can work around this temporarily with
BaseCriterion = Union[Criterion, EmptyCriterion], but that doesn't seem like the right long-term answer.