def __eq__(self, other):
            if isinstance(other, OrderedDict):
                return len(self)==len(other) and self.items() == other.items()
            return dict.__eq__(self, other)
od.__eq__(y) <==> od==y.  Comparison to another OD is order-sensitive
dataset/ETHPy150Open xraypy/xraylarch/doc/sphinx/ext/backports.py/OrderedDict.__eq__