已知字符串weather中存放了若干以逗号分隔的天气，如weather='sunny,rainny,windy,sunny,rainny,windy,sunny,windy,windy,sunny,sunny,windy'，统计每种天气出现的次数。
答：WEATHER='SUNNY,RAINNY,WINDY,SUNNY,RAINNY,WINDY,SUNNY,WINDY,WINDY,SUNNY,SUNNY,WINDY'WLIST = WEATHER.SPLIT(',')
RESULT = {W:WLIST.COUNT(W) FOR W IN WLIST}
PRINT('天气\T次数')
FOR R IN RESULT:
PRINT('{}\T{}'.FORMAT(R,RESULT[R]))
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