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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def update(self, other):
 """Merges other item with this object Args: other: Object containing items to merge into this object Must be a dictionary or NdMapping type """

        if isinstance(other, NdMapping):
            dims = [d for d in other.kdims if d not in self.kdims]
            if len(dims) == other.ndims:
                raise KeyError("Cannot update with NdMapping that has"
                               " a different set of key dimensions.")
            elif dims:
                other = other.drop_dimension(dims)
            other = other.data
        for key, data in other.items():
            self._add_item(key, data, sort=False)
        if self.sort:
            self._resort()