def __init__(self, primary, domains):
        self.primary = primary
        self.domains = [SecondaryAuthority(primary, d) for d in domains]
Subtract two dates, or a date and a timedelta.
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/names/secondary.py/SecondaryAuthorityService.__init__--crossover with--dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/datetime.py/date.__sub__