code: def from_lal_unit(lunit):
      
      return reduce(operator.mul, (
          units.Unit(str(LAL_UNIT_INDEX[i])) ** exp for
          i, exp in enumerate(lunit.unitNumerator)))
docs: Convert a LALUnit` into a `~astropy.units.Unit`
  
      Parameters
      ----------
      lunit : `lal.Unit`
          the input unit
  
      Returns
      -------
      unit : `~astropy.units.Unit`
          the Astropy representation of the input
  
      Raises
      ------
      TypeError
          if ``lunit`` cannot be converted to `lal.Unit`
      ValueError
          if Astropy doesn't understand the base units for the input