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Incorrect type inference with mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
__radd__ with subclass of tuple[int, ...]
bug
#19006
opened Apr 30, 2025 by
randolf-scholz
Wrong types when pattern matching mypy got something wrong
topic-enum
topic-match-statement
Python 3.10's match statement
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
int with http.HTTPStatus
bug
#18866
opened Apr 1, 2025 by
injust
False positive "Method must have at least one argument" with mypy got something wrong
topic-enum
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
@enum.member
bug
#18720
opened Feb 22, 2025 by
sterliakov
Incorrect inference for types with mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
__eq__ and no __hash__
bug
#18622
opened Feb 6, 2025 by
jorenham
ParamSpec seems to get lost with partial()
bug
mypy got something wrong
topic-paramspec
PEP 612, ParamSpec, Concatenate
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
#18589
opened Feb 2, 2025 by
Dreamsorcerer
Should a method name shadow outer names when quoted or with PEP563?
bug
mypy got something wrong
topic-quoted-annotations
Detecting problems with quoted annotations
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
#18525
opened Jan 24, 2025 by
sterliakov
mypy doesn't catch inheritance of outer class
bug
mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
#18393
opened Dec 31, 2024 by
injust
mypy assumes mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
importlib.metadata is implicitly imported via importlib?
bug
#18153
opened Nov 13, 2024 by
asottile-sentry
await-not-async missed & false alarms with genexp and list comprehensions
bug
mypy got something wrong
good-first-issue
topic-async
async, await, asyncio
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
#18124
opened Nov 7, 2024 by
jakkdl
(🐞) mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
Protocol not understood as an ABCMeta
bug
#17968
opened Oct 16, 2024 by
KotlinIsland
(🎁) Error when Properties, class vs. instance attributes
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
__get__ returns incompatible type
feature
topic-descriptors
#17360
opened Jun 11, 2024 by
KotlinIsland
False negative: mypy got something wrong
semantic-analyzer
Problems that happen during semantic analysis
topic-literal-types
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
typing.Literal[<Union expression>]
bug
#17260
opened May 17, 2024 by
bzoracler
no error when using generic in mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
except block
bug
#17248
opened May 15, 2024 by
DetachHead
mypy should fail if the first element of the type has the same name as the variable
bug
mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
#17227
opened May 8, 2024 by
userappgate
Keyword arguments to mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
__str__ are rejected
bug
#16735
opened Jan 2, 2024 by
JelleZijlstra
no error when subtyping string literal
bug
mypy got something wrong
priority-2-low
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
#16195
opened Sep 28, 2023 by
DetachHead
Within Annotated[T, x], type errors in x are completely ignored
feature
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
#16094
opened Sep 12, 2023 by
andersk
no error mypy got something wrong
topic-pep-585
PEP 585 (builtin generics)
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
__future__.annotations is imported, targeting python 3.8 and subscripting type in a position where it gets evaluated at runtime
bug
#15773
opened Jul 28, 2023 by
DetachHead
(🐞) no error with mypy got something wrong
topic-pep-604
PEP 604 (union | operator)
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
| operator on tuple and type
bug
#15756
opened Jul 24, 2023 by
KotlinIsland
Incorrect send type with mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
yield from
bug
#14834
opened Mar 4, 2023 by
SimpleArt
Mypy not detecting abstract methods returning undefined types
bug
mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
#14545
opened Jan 28, 2023 by
brunokc
mypy accepts invalid PEP 604 syntax with forward reference
feature
topic-pep-604
PEP 604 (union | operator)
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
#14397
opened Jan 5, 2023 by
Molkree
No error about mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
__future__ import placed after some statements
bug
#14195
opened Nov 25, 2022 by
denballakh
Does not recognize __func__ of methods
bug
mypy got something wrong
topic-runtime-semantics
mypy doesn't model runtime semantics correctly
#14123
opened Nov 17, 2022 by
asottile-sentry
(🎁) No warning about mypy doesn't model runtime semantics correctly
topic-type-alias
TypeAlias and other type alias issues
topic-type-variables
TypeAlias to bare TypeVar when using TypeAlias
feature
priority-2-low
topic-runtime-semantics
#13376
opened Aug 11, 2022 by
KotlinIsland
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