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40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
# Workaround for missing functools.partial support in mypy
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# (https://github.com/python/mypy/issues/1484).
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from collections.abc import Callable
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from typing import TYPE_CHECKING, TypeVar, overload
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if TYPE_CHECKING:
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from typing import Concatenate
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from typing_extensions import ParamSpec
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P = ParamSpec("P")
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T1 = TypeVar("T1")
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T2 = TypeVar("T2")
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T3 = TypeVar("T3")
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T4 = TypeVar("T4")
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R = TypeVar("R")
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@overload
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def partial(func: Callable[P, R], /) -> Callable[P, R]: ...
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@overload
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def partial(func: Callable[Concatenate[T1, P], R], arg1: T1, /) -> Callable[P, R]: ...
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@overload
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def partial(
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func: Callable[Concatenate[T1, T2, P], R], arg1: T1, arg2: T2, /
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) -> Callable[P, R]: ...
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@overload
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def partial(
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func: Callable[Concatenate[T1, T2, T3, P], R], arg1: T1, arg2: T2, arg3: T3, /
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) -> Callable[P, R]: ...
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@overload
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def partial(
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func: Callable[Concatenate[T1, T2, T3, T4, P], R], arg1: T1, arg2: T2, arg3: T3, arg4: T4, /
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) -> Callable[P, R]: ...
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def partial(func: Callable[..., R], /, *args: object) -> Callable[..., R]: ...
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else:
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from functools import partial as partial
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