python - while 循环中的一行代码只执行一次

Question

如何让特定的代码行在 while 循环中只执行一次？

我想要这条线: “你好 %s，请输入你的猜测:“%p1” 只运行一次，而不是每次玩家都猜错了。

是否有我可以使用的命令或功能，或者我是否必须以不同的方式构建整个游戏？这种形式的程序有简单的修复方法吗？

import random

number = random.randint(1,9)

p1 = input("Please enter your name: ")

count = 0

guess = 0

while guess != number and guess != "exit":

    guess = input("Hello %s, please enter your guess: " % p1)

    if guess == "exit":
        break

    guess = int(guess)
    count += 1

    if guess == number:
        print("Correct! It Took you only", count, "tries. :)")
        break
    elif guess > number:
        print("Too high. Try again.")
    elif guess < number:
        print("Too low. Try again.")

Answer 1

您可以创建一个标志变量，e。 G。

print_username = True

在 while 循环之前。在循环的第一次迭代后取消选中它:

if print_username:
    guess = input("Hello %s, please enter your guess: " % p1)
    print_username = False
else:
    guess = input("Try a new guess:")