Report attribute access errors for TypeVar bound to Union. - #11140
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Looks great, thanks for triaging and fixing! |
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Fixes #10948
I have briefly discussed the problem with @hauntsaninja on Gitter.
The solution is straightforward. All checks were there, but a missing
isinstancecheck prevented the detected errors from being reported.The added test case includes examples for getting, setting, and deleting undefined attributes.