

def __contains__(self, key):
    v = None
    try:
        v = self[key]
    except KeyError:
        return False
    else:
        if (v is None):
            return False
        else:
            return True

dataset/ETHPy150Open martyzz1/heroku3.py/heroku3/models/configvars.py ConfigVars.__contains__/original