def env(*args, **kwargs):
    for arg in args:
        value = os.environ.get(arg)
        if value:
            return value
    return kwargs.get('default', '')
Override parent equality because we store only string representation
dataset/ETHPy150Open openstack/python-ironicclient/ironicclient/common/cliutils.py/env--crossover with--dataset/ETHPy150Open stefanfoulis/django-phonenumber-field/phonenumber_field/phonenumber.py/PhoneNumber.__eq__