21 lines
558 B
Python
21 lines
558 B
Python
"""时间工具。"""
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from datetime import UTC, datetime
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def utc_now() -> datetime:
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return datetime.now(UTC)
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def to_iso(value: datetime | None) -> str | None:
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if value is None:
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return None
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if value.tzinfo is None:
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value = value.replace(tzinfo=UTC)
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return value.astimezone(UTC).isoformat().replace("+00:00", "Z")
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def as_utc(value: datetime) -> datetime:
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"""SQLite 读回 naive datetime 时补 UTC；PG(timezone=True) 读回 aware 则原样返回。"""
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return value if value.tzinfo else value.replace(tzinfo=UTC)
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