Fix typing.Literal support for Python 3.9
#104
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Fatal1ty
reviewed
Apr 24, 2023
RA80533
commented
Apr 24, 2023
RA80533
commented
Apr 24, 2023
Fatal1ty
reviewed
Apr 24, 2023
Python 3.9.1 changed the `type()` of `Literal` instances to be `_LiteralGenericAlias` instead of `_GenericAlias`. `is_literal_type()` assumed the change took place in Python 3.9.0 and checked for it accordingly. Because the assumption was incorrect, it failed to detect `Literal` types in Python versions [3.9.0, 3.9.1). This commit changes `is_literal_type()` to check `PY_310_MIN` instead of `PY_39_MIN` to fix the issue.
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Thanks 👍 |
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@Fatal1ty can we get this fix into a release please? |
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@fabiopedrosa Can it wait a bit more? I'm planning to make a release this or next week after finishing the following issues:
Good news is I'm almost done with the first two, just need to update the documentation. |
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Python 3.9.1 changed the
type()ofLiteralinstances to be_LiteralGenericAliasinstead of_GenericAlias.is_literal_type()assumed the change took place in Python 3.9.0 and checked for it accordingly. Because the assumption was incorrect, it failed to detectLiteraltypes in Python versions [3.9.0, 3.9.1).is_literal_type()was changed to checkPY_310_MINinstead ofPY_39_MIN(and check forPY_39separately)test_is_literal_unsupported_python()was updated to mock the updated conditionstest_is_literal_py39()was added to test backwards compatibility for Python versions [3.9.0, 3.9.1)Fixes #103