ch = input('please enter a char: ')if ch.isupper():print("這是大寫")elif ch.islower():print("這是小寫")elif ch.isdigit():print("這是數字")elif ch.isspace():print("這是特殊數字")
score=int(input("輸入你的成績>>>>"))rank = None "先給rank一個初始值"if 90 <=score<100:rank="A"elif 60 <=score<90:rank="B"elif 0 <=score<60:rank="C"if rank !=None: "!=為不等於"print("你的分數為:",score,end=" ") #結尾end=" "輸出不換行,空白間隔print("你的分數落點為:",rank)else:print("請輸入正確的分數")