67 lines
1.5 KiB
Python
67 lines
1.5 KiB
Python
"""
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compatibility functions for different Python versions
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"""
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# Copyright (C) 2021 The Psycopg Team
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from __future__ import annotations
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import sys
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from typing import Any, Iterator
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if sys.version_info >= (3, 11):
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from typing import LiteralString, Self
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else:
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from typing_extensions import LiteralString, Self
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if sys.version_info >= (3, 12):
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_asyncio_run_snippet = (
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"running 'asyncio.run(...,"
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" loop_factory=asyncio.SelectorEventLoop(selectors.SelectSelector()))'"
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)
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else:
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_asyncio_run_snippet = (
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"setting 'asyncio.set_event_loop_policy(WindowsSelectorEventLoopPolicy())'"
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)
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if sys.version_info >= (3, 13):
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from typing import TypeVar
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else:
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from typing_extensions import TypeVar
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if sys.version_info >= (3, 14):
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from string.templatelib import Interpolation, Template
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else:
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from typing import Generic, Literal
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from dataclasses import dataclass
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T = TypeVar("T")
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class Template:
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strings: tuple[str]
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interpolations: tuple[Interpolation[Any]]
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def __new__(cls, *args: str | Interpolation[Any]) -> Self:
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return cls()
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def __iter__(self) -> Iterator[str | Interpolation[Any]]:
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return
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yield
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@dataclass
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class Interpolation(Generic[T]):
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value: T
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expression: str
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conversion: Literal["a", "r", "s"] | None
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format_spec: str
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__all__ = [
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"Interpolation",
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"LiteralString",
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"Self",
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"Template",
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"TypeVar",
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]
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