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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 daily_temperature_range_variability(tasmax, tasmin, freq="YS"):
 r"""Mean absolute day-to-day variation in daily temperature range. Mean absolute day-to-day variation in daily temperature range. Parameters tasmax : xarray.DataArray Maximum daily temperature values [℃] or [K] tasmin : xarray.DataArray Minimum daily temperature values [℃] or [K] freq : str, optional Resampling frequency Returns ------- xarray.DataArray The average day-to-day variation in daily temperature range for the given time period. Notes ----- Let :math:`TX_{ij}` and :math:`TN_{ij}` be the daily maximum and minimum temperature at day :math:`i` of period :math:`j`. Then calculated is the absolute day-to-day differences in period :math:`j` is: .. math:: vDTR_j = \frac{ \sum_{i=2}^{I} |(TX_{ij}-TN_{ij})-(TX_{i-1,j}-TN_{i-1,j})| }{I} """


    vdtr = abs((tasmax - tasmin).diff(dim='time'))
    out = vdtr.resample(time=freq).mean(dim='time')
    out.attrs['units'] = tasmax.units
    return out