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[ty] Remove use of ClassBase::try_from_type from super() machinery (#19902)

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Alex Waygood 2025-08-14 22:14:31 +01:00 • committed by GitHub
parent ce938fe205
commit 82350a398e
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2 changed files with 41 additions and 16 deletions
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16
crates/ty_python_semantic/resources/mdtest/class/super.md
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@ -331,6 +331,9 @@ instance or a subclass of the first. If either condition is violated, a `TypeErr
runtime.
```py
import typing
import collections
def f(x: int):
# error: [invalid-super-argument] "`int` is not a valid class"
super(x, x)
@ -367,6 +370,19 @@ reveal_type(super(B, A))
reveal_type(super(B, object))
super(object, object()).__class__
# Not all objects valid in a class's bases list are valid as the first argument to `super()`.
# For example, it's valid to inherit from `typing.ChainMap`, but it's not valid as the first argument to `super()`.
#
# error: [invalid-super-argument] "`typing.ChainMap` is not a valid class"
reveal_type(super(typing.ChainMap, collections.ChainMap())) # revealed: Unknown
# Meanwhile, it's not valid to inherit from unsubscripted `typing.Generic`,
# but it *is* valid as the first argument to `super()`.
reveal_type(super(typing.Generic, typing.SupportsInt)) # revealed: <super: typing.Generic, <class 'SupportsInt'>>
def _(x: type[typing.Any], y: typing.Any):
reveal_type(super(x, y)) # revealed: <super: Any, Any>
```
### Instance Member Access via `super`