>>> True and True True >>> True and False False >>> False and False False >>> 5 > 3 and 3 > 1 True >>> not True False >>> not False True >>> not 1 > 2 True if age >= 18: print('adult') else: print('teenager') 分享知識(shí),分享快樂(lè)!希望中國(guó)站在編程之巔!
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