Helper function for equals and identical

def _all_compat(self, other, compat_str):
        """Helper function for equals and identical"""

        # some stores (e.g., scipy) do not seem to preserve order, so don't
        # require matching order for equality
        def compat(x, y):
            return getattr(x, compat_str)(y)

        return (self._coord_names == other._coord_names and
                utils.dict_equiv(self._variables, other._variables,
                                 compat=compat))