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from __future__ import annotations
from pathlib import Path
from typing import cast
from pendulum.tz.local_timezone import get_local_timezone
from pendulum.tz.local_timezone import set_local_timezone
from pendulum.tz.local_timezone import test_local_timezone
from pendulum.tz.timezone import UTC
from pendulum.tz.timezone import FixedTimezone
from pendulum.tz.timezone import Timezone
from pendulum.utils._compat import resources
PRE_TRANSITION = "pre"
POST_TRANSITION = "post"
TRANSITION_ERROR = "error"
_timezones = None
_tz_cache: dict[int, FixedTimezone] = {}
def timezones() -> tuple[str, ...]:
global _timezones
if _timezones is None:
with cast(Path, resources.files("tzdata").joinpath("zones")).open() as f:
_timezones = tuple(tz.strip() for tz in f.readlines())
return _timezones
def fixed_timezone(offset: int) -> FixedTimezone:
"""
Return a Timezone instance given its offset in seconds.
"""
if offset in _tz_cache:
return _tz_cache[offset]
tz = FixedTimezone(offset)
_tz_cache[offset] = tz
return tz
def local_timezone() -> Timezone | FixedTimezone:
"""
Return the local timezone.
"""
return get_local_timezone()
__all__ = [
"UTC",
"Timezone",
"FixedTimezone",
"set_local_timezone",
"get_local_timezone",
"test_local_timezone",
"fixed_timezone",
"local_timezone",
"timezones",
]
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