Fix bug with in operator used with a union of Container and Iterable #14384
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JukkaL
approved these changes
Jan 11, 2023
mypy/checkexpr.py
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| We allow `in` for a union of containers and iterables as long as at least one of them matches the | ||
| type of the left operand, as the operation will simply return False if the union's container/iterator | ||
| type doesn't match the left operand. | ||
| """ |
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Style nit: We use # comments also for block comments.
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According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉 |
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Fixes #4954.
Modifies analysis of
incomparison expressions. Previously, mypy would check the right operand of aninexpression to see if it was a union ofContainers, and then if it was a union ofIterables, but would fail on unions of bothContainers andIterables.