def __contains__(self, t):
    ' t in this '
    for (k, v) in self.__dict__.items():
        if (k == t):
            return True
        if isinstance(v, DictToAttrDeep):
            if (t in v):
                return True
t in this
def __contains__(self, t):
    '  '
    for (k, v) in self.__dict__.items():
        if (k == t):
            return True
        if isinstance(v, DictToAttrDeep):
            if (t in v):
                return True