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File Content: _helpers.py

try:
    import pytz
except ModuleNotFoundError:
    pytz = None
    import zoneinfo

def _get_tzinfo(tzenv: str):
    """Get the tzinfo from `zoneinfo` or `pytz`

:param tzenv: timezone in the form of Continent/City
    :return: tzinfo object or None if not found
    """
    if pytz:
        try:
            return pytz.timezone(tzenv)
        except pytz.UnknownTimeZoneError:
            pass
    else:
        try:
            return zoneinfo.ZoneInfo(tzenv)
        except zoneinfo.ZoneInfoNotFoundError:
            pass

return None

def _get_tzinfo_or_raise(tzenv: str):
    tzinfo = _get_tzinfo(tzenv)
    if tzinfo is None:
        raise LookupError(
            f"Can not find timezone {tzenv}. \n"
            "Timezone names are generally in the form `Continent/City`."
        )
    return tzinfo

def _get_tzinfo_from_file(tzfilename: str):
    with open(tzfilename, 'rb') as tzfile:
        if pytz:
            return pytz.tzfile.build_tzinfo('local', tzfile)
        else:
            return zoneinfo.ZoneInfo.from_file(tzfile)

Name	Size	Permission
__pycache__	---	0755
__init__.py	1043 bytes	0644
_fallback.py	1207 bytes	0644
_helpers.py	1059 bytes	0644
_unix.py	3455 bytes	0644
_win32.py	3211 bytes	0644