#!/usr/bin/python3 var1 = 100 if var1: print ("1 - if 表达式条件为 true") print (var1) var2 = 0 if var2: print ("2 - if 表达式条件为 true") print (var2) print ("Good bye!") ------------------------------------------------------------------------ #!/usr/bin/python3 age = int(input("请输入你家狗狗的年龄: ")) print("") if age < 0: print("你是在逗我吧!") elif age == 1: print("相当于 14 岁的人。") elif age == 2: print("相当于 22 岁的人。") elif age > 2: human = 22 + (age -2)*5 print("对应人类年龄: ", human) ### 退出提示 input("点击 enter 键退出") 结果: 请输入你家狗狗的年龄: 对应人类年龄: 627 点击 enter 键退出 ------------------------------------------------------------------------ #!/usr/bin/python3 # 该实例演示了数字猜谜游戏 number = 7 guess = -1 print("数字猜谜游戏!") while guess != number: guess = int(input("请输入你猜的数字:")) if guess == number: print("恭喜,你猜对了!") elif guess < number: print("猜的数字小了...") elif guess > number: print("猜的数字大了...") ------------------------------------------------------------------------
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