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4739bc8d14
## Summary Resolves https://github.com/astral-sh/ty/issues/862 by not emitting a diagnostic. ## Test Plan Add test to show we don't emit the diagnostic
1.1 KiB
1.1 KiB
Instance subscript
__getitem__ unbound
class NotSubscriptable: ...
a = NotSubscriptable()[0] # error: "Cannot subscript object of type `NotSubscriptable` with no `__getitem__` method"
__getitem__ not callable
class NotSubscriptable:
__getitem__ = None
# error: "Method `__getitem__` of type `Unknown | None` is not callable on object of type `NotSubscriptable`"
a = NotSubscriptable()[0]
Valid __getitem__
class Identity:
def __getitem__(self, index: int) -> int:
return index
reveal_type(Identity()[0]) # revealed: int
__getitem__ union
def _(flag: bool):
class Identity:
if flag:
def __getitem__(self, index: int) -> int:
return index
else:
def __getitem__(self, index: int) -> str:
return str(index)
reveal_type(Identity()[0]) # revealed: int | str
__setitem__ with no __getitem__
class NoGetitem:
def __setitem__(self, index: int, value: int) -> None:
pass
a = NoGetitem()
a[0] = 0