Function memorized_timedelta

tests/test_code/py/pytz/tzinfo.py:18–25

Create only one instance of each distinct timedelta

(seconds)

def memorized_timedelta(seconds):
    '''Create only one instance of each distinct timedelta'''
    try:
        return _timedelta_cache[seconds]
    except KeyError:
        delta = timedelta(seconds=seconds)
        _timedelta_cache[seconds] = delta
        return delta

_epoch = datetime.utcfromtimestamp(0)
_datetime_cache = {0: _epoch}