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#1645 · yangdanny97 opened on Nov 21, 2025

Custom __new__ on a NamedTuple subclass is ignored when constructing a further subclass
facebook/pyrefly#5224 · opened on Oct 13, 2026
from .. import x fails in modules whose filename starts with a digit (e.g. Django migrations)
facebook/pyrefly#5223 · opened on Oct 13, 2026
Names silently become Unknown when a package re-exports a cycle via from .x import *
facebook/pyrefly#5222 · opened on Oct 13, 2026
ERROR / is not supported between Tensor[[SeqLen, BatchSize, 2]] and Tensor[[NormalizationDims]] [unsupported-operation]
facebook/pyrefly#5221 · opened on Oct 13, 2026
lst[cast("int", a)] += 1 gives bad-argument-type on the "int" input even though it's valid
facebook/pyrefly#5220 · opened on Oct 13, 2026
False unexpected-keyword on constructor when the first base class is written as class Mixin(object)
facebook/pyrefly#5219 · opened on Oct 13, 2026
Hover on property with setter during assignment shows nothing
facebook/pyrefly#5218 · opened on Oct 13, 2026
1
Confusing error message for bad-argument-type on methods where self is incorrect and there are overloads
facebook/pyrefly#5217 · opened on Oct 13, 2026
sandbox crashes when changing `python-version
Bug
facebook/pyrefly#5213 · opened on Oct 13, 2026
new rule - overload signatures not immediately followed by the implementation
facebook/pyrefly#5212 · opened on Oct 13, 2026
Pydantic FieldInfo.annotation typed incorrectly (3.13)?
facebook/pyrefly#5209 · opened on Oct 12, 2026
register_buffer/register_parameter propagate an already-invalid argument type
facebook/pyrefly#5208 · opened on Oct 12, 2026
Import resolution re-walks every search root for each module that shares a prefix
facebook/pyrefly#5207 · opened on Oct 12, 2026
Pyrefly doesn't fully narrow tuple in exhaustible match-case
Bug
facebook/pyrefly#5206 · opened on Oct 12, 2026
1
Specialised-self overloads select the first match for a gradual receiver
Bug
facebook/pyrefly#5205 · opened on Oct 12, 2026
LSP: unreachable-code warning on the else block of if TYPE_CHECKING
facebook/pyrefly#5202 · opened on Oct 12, 2026
Cannot get typing correct for UserDict.__ior__() and hoping for documentation
facebook/pyrefly#5199 · opened on Oct 11, 2026
unreachable is not reported after a type-exhaustive match/if whose paths all diverge
Bug
facebook/pyrefly#5197 · opened on Oct 11, 2026
Callable assignability ignores explicit positional parameters when the signature ends in *args: Any, **kwargs: Any
Bug
facebook/pyrefly#5194 · opened on Oct 11, 2026
implicit-import false positive: submodule imported explicitly but used through an aliased parent
Bug
facebook/pyrefly#5193 · opened on Oct 11, 2026
Literal[Enum.MEMBER] in a union is normalized to the enum class, then rejected against a generic TypeAlias containing the same literal
Bug
facebook/pyrefly#5191 · opened on Oct 10, 2026
4
Dataclass member containing descriptor is resolved on access
Bug
facebook/pyrefly#5189 · opened on Oct 10, 2026
Type not narrowed based on attribute type
Feature
facebook/pyrefly#5187 · opened on Oct 10, 2026
Variable type is not narrowed after "if" containing both call to "Never-returning" function and "raise"
Bug
facebook/pyrefly#5186 · opened on Oct 10, 2026
TypedDict built with ** unpacking isn't inferred inside a tuple when the declared return type is a union of tuples
Bug
facebook/pyrefly#5184 · opened on Oct 10, 2026
1