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from __future__ import annotations
from collections.abc import Callable
from datetime import datetime, timedelta
from enum import Enum
from typing import TypeVar
from uuid import UUID
TEnum = TypeVar("TEnum", bound=Enum)
def as_aware_datetime(value: datetime | str) -> datetime:
"""Convert the value from a string to a timezone aware datetime."""
if isinstance(value, str):
# fromisoformat() does not handle the "Z" suffix
if value.upper().endswith("Z"):
value = value[:-1] + "+00:00"
value = datetime.fromisoformat(value)
return value
def as_uuid(value: UUID | str) -> UUID:
"""Convert a string-formatted UUID to a UUID instance."""
if isinstance(value, str):
return UUID(value)
return value
def as_timedelta(value: timedelta | float | None) -> timedelta | None:
if isinstance(value, (float, int)):
return timedelta(seconds=value)
return value
def as_enum(enum_class: type[TEnum]) -> Callable[[TEnum | str], TEnum]:
def converter(value: TEnum | str) -> TEnum:
if isinstance(value, str):
return enum_class.__members__[value]
return value
return converter
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