code: def dewpoint_from_specific_humidity(specific_humidity, temperature, pressure):
      r
      return dewpoint_rh(temperature, relative_humidity_from_specific_humidity(specific_humidity,
                                                                               temperature,
                                                                               pressure))
docs: r"""Calculate the dewpoint from specific humidity, temperature, and pressure.
  
      Parameters
      ----------
      specific_humidity: `pint.Quantity`
          Specific humidity of air
      temperature: `pint.Quantity`
          Air temperature
      pressure: `pint.Quantity`
          Total atmospheric pressure
  
      Returns
      -------
      `pint.Quantity`
          Dewpoint temperature
  
      See Also
      --------
      relative_humidity_from_mixing_ratio, dewpoint_rh