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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 assign_coords(self, **kwargs):
 """Assign new coordinates to this object. Returns a new object with all the original data in addition to the new coordinates. Parameters kwargs : keyword, value pairs keywords are the variables names. If the values are callable, they are computed on this object and assigned to new coordinate variables. If the values are not callable, (e.g. a DataArray, scalar, or array), they are simply assigned. Returns ------- assigned : same type as caller A new object with the new coordinates in addition to the existing data. Examples -------- Convert longitude coordinates from 0-359 to -180-179: <xarray.DataArray (lon: 4)> array([0.28298 , 0.667347, 0.657938, 0.177683]) Coordinates: * lon (lon) int64 358 359 0 1 <xarray.DataArray (lon: 4)> array([0.28298 , 0.667347, 0.657938, 0.177683]) Coordinates: * lon (lon) int64 -2 -1 0 1 Notes ----- Since ``kwargs`` is a dictionary, the order of your arguments may not be preserved, and so the order of the new variables is not well defined. Assigning multiple variables within the same ``assign_coords`` is possible, but you cannot reference other variables created within the same ``assign_coords`` call. See also -------- Dataset.assign Dataset.swap_dims """

        data = self.copy(deep=False)
        results = self._calc_assign_results(kwargs)
        data.coords.update(results)
        return data