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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 xarray_derivative_wrap(func):
 """Decorate the derivative functions to make them work nicely with DataArrays. This will automatically determine if the coordinates can be pulled directly from the DataArray, or if a call to lat_lon_grid_deltas is needed. """

    @functools.wraps(func)
    def wrapper(f, **kwargs):
        if 'x' in kwargs or 'delta' in kwargs:
            # Use the usual DataArray to pint.Quantity preprocessing wrapper
            return preprocess_xarray(func)(f, **kwargs)
        elif isinstance(f, xr.DataArray):
            # Get axis argument, defaulting to first dimension
            axis = f.metpy.find_axis_name(kwargs.get('axis', 0))

            # Initialize new kwargs with the axis number
            new_kwargs = {'axis': f.get_axis_num(axis)}

            if f[axis].attrs.get('_metpy_axis') == 'T':
                # Time coordinate, need to convert to seconds from datetimes
                new_kwargs['x'] = f[axis].metpy.as_timestamp().metpy.unit_array
            elif CFConventionHandler.check_axis(f[axis], 'lon'):
                # Longitude coordinate, need to get grid deltas
                new_kwargs['delta'], _ = grid_deltas_from_dataarray(f)
            elif CFConventionHandler.check_axis(f[axis], 'lat'):
                # Latitude coordinate, need to get grid deltas
                _, new_kwargs['delta'] = grid_deltas_from_dataarray(f)
            else:
                # General coordinate, use as is
                new_kwargs['x'] = f[axis].metpy.unit_array

            # Calculate and return result as a DataArray
            result = func(f.metpy.unit_array, **new_kwargs)
            return xr.DataArray(result.magnitude,
                                coords=f.coords,
                                dims=f.dims,
                                attrs={'units': str(result.units)})
        else:
            # Error
            raise ValueError('Must specify either "x" or "delta" for value positions when "f" '
                             'is not a DataArray.')
    return wrapper