Thanks to visit codestin.com
Credit goes to github.com

Skip to content

Fix an issubclass failure for protocols with overloaded methods #9904

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Feb 20, 2022
Merged

Fix an issubclass failure for protocols with overloaded methods #9904

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
5b52987
BUG: Fix an `issubclass` failure for protocols with overloaded methods
Jan 12, 2021
f5acef7
Merge branch 'master' into issubclass
hauntsaninja Aug 4, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion mypy/subtypes.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -735,7 +735,7 @@ def non_method_protocol_members(tp: TypeInfo) -> List[str]:

for member in tp.protocol_members:
typ = get_proper_type(find_member(member, instance, instance))
if not isinstance(typ, CallableType):
if not isinstance(typ, (Overloaded, CallableType)):
result.append(member)
return result

Expand Down
13 changes: 12 additions & 1 deletion test-data/unit/check-protocols.test
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2270,7 +2270,7 @@ y: PBad = None # E: Incompatible types in assignment (expression has type "None
[out]

[case testOnlyMethodProtocolUsableWithIsSubclass]
from typing import Protocol, runtime_checkable, Union, Type
from typing import Protocol, runtime_checkable, Union, Type, Sequence, overload
@runtime_checkable
class P(Protocol):
def meth(self) -> int:
Expand All @@ -2292,6 +2292,17 @@ if issubclass(cls, P):
reveal_type(cls) # N: Revealed type is "Type[__main__.C]"
else:
reveal_type(cls) # N: Revealed type is "Type[__main__.E]"

@runtime_checkable
class POverload(Protocol):
@overload
def meth(self, a: int) -> float: ...
@overload
def meth(self, a: str) -> Sequence[float]: ...
def meth(self, a):
pass

reveal_type(issubclass(int, POverload)) # N: Revealed type is "builtins.bool"
[builtins fixtures/isinstance.pyi]
[typing fixtures/typing-full.pyi]
[out]
Expand Down