Function memorized_ttinfo

tests/test_code/py/pytz/tzinfo.py:45–56

Create only one instance of each distinct tuple

(*args)

def memorized_ttinfo(*args):
    '''Create only one instance of each distinct tuple'''
    try:
        return _ttinfo_cache[args]
    except KeyError:
        ttinfo = (
            memorized_timedelta(args[0]),
            memorized_timedelta(args[1]),
            args[2]
        )
        _ttinfo_cache[args] = ttinfo
        return ttinfo

_notime = memorized_timedelta(0)