| """ | |
| Timezone utilities | |
| Just UTC-awareness right now | |
| """ | |
| # Copyright (c) Jupyter Development Team. | |
| # Distributed under the terms of the Modified BSD License. | |
| from __future__ import annotations | |
| from datetime import datetime, timedelta, timezone, tzinfo | |
| # constant for zero offset | |
| ZERO = timedelta(0) | |
| class tzUTC(tzinfo): # noqa: N801 | |
| """tzinfo object for UTC (zero offset)""" | |
| def utcoffset(self, d: datetime | None) -> timedelta: | |
| """Compute utcoffset.""" | |
| return ZERO | |
| def dst(self, d: datetime | None) -> timedelta: | |
| """Compute dst.""" | |
| return ZERO | |
| def utcnow() -> datetime: | |
| """Return timezone-aware UTC timestamp""" | |
| return datetime.now(timezone.utc) | |
| def utcfromtimestamp(timestamp: float) -> datetime: | |
| return datetime.fromtimestamp(timestamp, timezone.utc) | |
| UTC = tzUTC() # type:ignore[abstract] | |
| def isoformat(dt: datetime) -> str: | |
| """Return iso-formatted timestamp | |
| Like .isoformat(), but uses Z for UTC instead of +00:00 | |
| """ | |
| return dt.isoformat().replace("+00:00", "Z") | |