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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 wind(direction: Number, speed: Number, gust: Number, vardir: typing.List[Number] = None, unit: str = 'kt') -> str: """ Format wind details into a spoken word string """

    unit = SPOKEN_UNITS.get(unit, unit)
    val = translate.wind(direction, speed, gust, vardir, unit,
                         cardinals=False, spoken=True)
    return 'Winds ' + (val or 'unknown')