BTW I found it a little concerning thatTypeInfo.get andTypeInfo.get_method only consider the mro and not the metaclass when looking up symbols, but I didn't have the stomach to change this, since there probably is code that depends on this behavior.

I fear however that there are quite a few more places where attribute lookups are incorrect (other than the one I have fixed in this PR), because the attribute is defined on the metaclass and not on the class itself. Should we perhaps create an issue to potentially review call sites ofget/clean this up/improve documentation to avoid more errors in the future?

@hauntsaninja Not asking for a review (although that would be nice too), but for your thoughts on my comment above:#17337 (comment)

According tomypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅