Properly support union of TypedDicts as dict literal context #14505
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According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉 |
JukkaL
approved these changes
Jan 23, 2023
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Awesome! What version will this be available in? |
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I guess it will be included in 1.0 |
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@ilevkivskyi Cool, when is that set to launch? |
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1.0 should be out within the next week or two. |
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Fixes #14481 (regression)
Fixes #13274
Fixes #8533
Most notably, if literal matches multiple items in union, it is not an error, it is only an error if it matches none of them, so I adjust the error message accordingly.
An import caveat is that an unrelated error like
{"key": 42 + "no"}can cause no item to match (an hence an extra error), but I think it is fine, since we still show the actual error, and avoiding this would require some dirty hacks.Also note there was an (obvious) bug in one of the fixtures, that caused one of repros not repro in tests, fixing it required tweaking an unrelated test.