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Issues list
constrain a generic type with an alias derived from a union type in Python
feature
#18316
by GENDRAUD
was closed Dec 20, 2024
Type is not narrowed in else clause following check via type()
bug
mypy got something wrong
#18315
by eroller
was closed Dec 19, 2024
Generic class with a single upper bound of a union type
bug
mypy got something wrong
#18313
by ritsuki1227
was closed Dec 19, 2024
Incompletely defining a Issues related to PEP 695 syntax
TypeAliasType
causes mypy to crash
crash
topic-pep-695
#18307
by bzoracler
was closed Dec 19, 2024
Wrong warning for multiple type parameters if argument passed is a variable
bug
mypy got something wrong
#18305
by pksadiq
was closed Dec 18, 2024
Mypy exclude doesn't work as expected
bug
mypy got something wrong
#18284
by artsiomkaltovich
was closed Dec 14, 2024
mypy incorrectly complains about function signature in @overload
bug
mypy got something wrong
#18282
by ErwandKe
was closed Dec 12, 2024
Parameters of the form type[typevar] cause issues with type refinement
bug
mypy got something wrong
#18277
by Pluviolithic
was closed Dec 10, 2024
Unexpected "Never has no attribute..." error for declared context manager enter result type
bug
mypy got something wrong
#18271
by ncoghlan
was closed Dec 9, 2024
Add --strict-bytes flag to disable promotions to bytes
feature
good-first-issue
priority-0-high
#18256
by JukkaL
was closed Dec 10, 2024
False override error with Unpack and TypedDict
bug
mypy got something wrong
#18250
by mharding-hpe
was closed Dec 5, 2024
Classmethod constructor pattern on a generic container with a bound typevar has incompatible type with fixed output type
bug
mypy got something wrong
#18244
by pechersky
was closed Dec 4, 2024
Unpack forces all optional args
bug
mypy got something wrong
#18243
by alon-ba
was closed Dec 4, 2024
TypeAlias
to alias a ClassVar
with an Annotated
type raises an error
bug
#18226
by caniko
was closed Dec 2, 2024
slice behavior difference in mypy 1.14+dev and 1.13
bug
mypy got something wrong
#18225
by Dr-Irv
was closed Dec 2, 2024
Disallow PEP 591
topic-named-tuple
topic-typed-dict
ClassVar
and Final
qualifiers in TypedDict
and NamedTuple
items
feature
topic-final
#18220
by brianschubert
was closed Dec 12, 2024
AnyStr parameter + mypy got something wrong
topic-type-variables
sys.version_info
check in function causes mypy to not realize True is bool
bug
#18210
by jwodder
was closed Dec 2, 2024
unexpected Incompatible types when using Union type in list
bug
mypy got something wrong
#18201
by MatthieuCMira
was closed Nov 27, 2024
Unsupported left operand for type * in onnxscript and opset15
bug
mypy got something wrong
#18200
by tuanle0910
was closed Nov 29, 2024
Join and meet are not symmetric
bug
mypy got something wrong
good-second-issue
#18199
by hauntsaninja
was closed Dec 2, 2024
type[Literal['']]
does not accept str
as the type
bug
#18196
by sobolevn
was closed Dec 11, 2024
Generic type aliases with TypeVar defaults infer to an incorrect type
bug
mypy got something wrong
#18188
by alexdrydew
was closed Nov 27, 2024
Recursive sequence type of mypy got something wrong
topic-recursive-types
Sequence[NotAString]
should not accept str
bug
#18184
by jorenham
was closed Nov 24, 2024
Self does not work with delegation and an explicit return type
bug
mypy got something wrong
#18182
by voidspace
was closed Nov 24, 2024
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