Simplified caching of get_default_timezone().

            time.tzset()

        # Reset local time zone cache

        timezone._localtime = None

        timezone.get_default_timezone.cache_clear()

    # Reset the database connections' time zone

    if kwargs['setting'] == 'USE_TZ' and settings.TIME_ZONE != 'UTC':

    pytz = None

from django.conf import settings

from django.utils import lru_cache

from django.utils import six

from django.utils.decorators import ContextDecorator

    name = sign + hhmm

    return FixedOffset(offset, name)

# In order to avoid accessing the settings at compile time,

# wrap the expression in a function and cache the result.

_localtime = None

# In order to avoid accessing settings at compile time,

# wrap the logic in a function and cache the result.

@lru_cache.lru_cache()

def get_default_timezone():

    """

    Returns the default time zone as a tzinfo instance.

    This is the time zone defined by settings.TIME_ZONE.

    """

    global _localtime

    if _localtime is None:

    if isinstance(settings.TIME_ZONE, six.string_types) and pytz is not None:

            _localtime = pytz.timezone(settings.TIME_ZONE)

        return pytz.timezone(settings.TIME_ZONE)

    else:

        # This relies on os.environ['TZ'] being set to settings.TIME_ZONE.

            _localtime = LocalTimezone()

    return _localtime

        return LocalTimezone()

# This function exists for consistency with get_current_timezone_name