__init__.py

import datetime
 
from .cached_property import cached_property  # noqa: F401
 
UTC = datetime.timezone.utc
 
 
def to_utc(stamp: datetime.datetime) -> datetime.datetime:
    if stamp.tzinfo is not None:
        stamp = stamp.astimezone(UTC).replace(tzinfo=None)
    return stamp
 
 
def timestring(stamp: datetime.datetime) -> str:
    stamp = to_utc(stamp)
    return stamp.strftime('%Y-%m-%dT%H:%M:%S.%f+0000')
 
 
def utcnow() -> datetime.datetime:
    return datetime.datetime.now(UTC).replace(tzinfo=None)
 
 
def utcfromtimestamp(stamp: int) -> datetime.datetime:
    return datetime.datetime.fromtimestamp(stamp, tz=UTC).replace(tzinfo=None)