ruff/crates/ruff_linter/resources/test/fixtures/pyupgrade/UP040.py at fbb2e354066a44aa84d41dfc23d852739acae7b0 · fredrikblau/ruff · GitHub

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import typing
from typing import Any, TypeAlias

# UP040
x: typing.TypeAlias = int
x: TypeAlias = int

# UP040 simple generic
T = typing.TypeVar["T"]
x: typing.TypeAlias = list[T]

# UP040 call style generic
T = typing.TypeVar("T")
x: typing.TypeAlias = list[T]

# UP040 bounded generic
T = typing.TypeVar("T", bound=int)
x: typing.TypeAlias = list[T]

# UP040 constrained generic
T = typing.TypeVar("T", int, str)
x: typing.TypeAlias = list[T]

# UP040 contravariant generic
T = typing.TypeVar("T", contravariant=True)
x: typing.TypeAlias = list[T]

# UP040 covariant generic
T = typing.TypeVar("T", covariant=True)
x: typing.TypeAlias = list[T]

# UP040 in class scope
T = typing.TypeVar["T"]
class Foo:
    # reference to global variable
    x: typing.TypeAlias = list[T]

    # reference to class variable
    TCLS = typing.TypeVar["TCLS"]
    y: typing.TypeAlias = list[TCLS]

# UP040 won't add generics in fix
T = typing.TypeVar(*args)
x: typing.TypeAlias = list[T]

# `default` was added in Python 3.13
T = typing.TypeVar("T", default=Any)
x: typing.TypeAlias = list[T]

# OK
x: TypeAlias
x: int = 1

# Ensure that "T" appears only once  in the type parameters for the modernized
# type alias.
T = typing.TypeVar["T"]
Decorator: TypeAlias = typing.Callable[[T], T]


from typing import TypeVar, Annotated, TypeAliasType

from annotated_types import Gt, SupportGt


# https://github.com/astral-sh/ruff/issues/11422
T = TypeVar("T")
PositiveList = TypeAliasType(
    "PositiveList", list[Annotated[T, Gt(0)]], type_params=(T,)
)

# Bound
T = TypeVar("T", bound=SupportGt)
PositiveList = TypeAliasType(
    "PositiveList", list[Annotated[T, Gt(0)]], type_params=(T,)
)

# Multiple bounds
T1 = TypeVar("T1", bound=SupportGt)
T2 = TypeVar("T2")
T3 = TypeVar("T3")
Tuple3 = TypeAliasType("Tuple3", tuple[T1, T2, T3], type_params=(T1, T2, T3))

# No type_params
PositiveInt = TypeAliasType("PositiveInt", Annotated[int, Gt(0)])
PositiveInt = TypeAliasType("PositiveInt", Annotated[int, Gt(0)], type_params=())

# OK: Other name
T = TypeVar("T", bound=SupportGt)
PositiveList = TypeAliasType(
    "PositiveList2", list[Annotated[T, Gt(0)]], type_params=(T,)
)

# `default` was added in Python 3.13
T = typing.TypeVar("T", default=Any)
AnyList = TypeAliasType("AnyList", list[T], type_params=(T,))

# Comments outside the alias value are removed by the fix.
T = TypeVar("T")
PositiveList = TypeAliasType(  # eaten comment
    "PositiveList", list[Annotated[T, Gt(0)]], type_params=(T,)
)

T = TypeVar("T")
PositiveList = TypeAliasType(
    "PositiveList", list[Annotated[T, Gt(0)]], type_params=(T,)
) # this comment should be okay


# this comment will actually be preserved because it's inside the "value" part
T = TypeVar("T")
PositiveList = TypeAliasType(
    "PositiveList", list[
        Annotated[T, Gt(0)],  # preserved comment
    ], type_params=(T,)
)

T: TypeAlias = (
    int
    | str
)

T: TypeAlias = ( # comment0
    # comment1
    int  # comment2
    # comment3
    | # comment4
    # comment5
    str  # comment6
    # comment7
) # comment8

# Test case for TypeVar with default - should be converted when preview mode is enabled
T_default = TypeVar("T_default", default=int)
DefaultList: TypeAlias = list[T_default]

# Preserve parentheses around a multiline union in a TypeAliasType call.
LongAlias = TypeAliasType(
    "LongAlias",
    int
    | str
    | float
)

# An already parenthesized value keeps its own parentheses.
ParenAlias = TypeAliasType(
    "ParenAlias",
    (
        int
        | str
    ),
)