任何人都知道为什么我得到一个“进程以退出代码 0 完成”吗？

Question

我正在尝试运行这个程序，但由于某种原因，每当我输入 0 时，程序就会停止运行。我期待“您猜得太低，请再试一次”，因为输入小于生成的随机数。谁能帮忙解释一下？另外，请随时批评我的代码，以便我可以做得更好。非常感谢。

# Generate random number for player to guess.
import random

number = random.randint(1, 3)
print(number)

# Ask player's name and have player guess the number.
welcomeUser = input("Hi, welcome to 'Guess a Number!'. Please tell us your name ")

userName = str(welcomeUser)
userGuess = int((input("Guess a number from 1 - 3 ")))

# Cycle through player's guesses until player enters correct number.
while userGuess:
    if userGuess > number:
        print("You've guess too high, please try again ")
        userGuess = int(input("Guess a number from 1 - 3 "))
        if userGuess == number:
            print("Congratulations! You've guessed correctly! ")
            break
    elif userGuess < number or userGuess == 0:
        print("You've guessed too low, please try again ")
        userGuess = int(input("Guess a number from 1 - 3 "))
        if userGuess == number:
            print("Congratulations! You've guessed correctly! ")
            break
    else:
        print("Congratulations " + userName + "! " + "You've guessed correctly! ")
        break

Answer 1

0 是错误的，即它在布尔表达式中计算为 False。因此，while 循环以

开头

while userGuess:

如果userGuess 是0，将被跳过。看起来您不需要检查循环中的任何条件，因此将其更改为

while True:

应该足够了。顺便说一句，Process finished with exit code 0 只是表示程序没有任何错误退出。

Answer 2

在 python 0 中等于“假”。因此，当您输入“0”时，userGuess 变为 false，while 循环终止。 最好引入一个新变量：

continueProgram = True
while continueProgram :
    if userGuess > number:
        print("You've guess too high, please try again ")
        userGuess = int(input("Guess a number from 1 - 3 "))
        if userGuess == number:
            print("Congratulations! You've guessed correctly! ")
            continueProgram = False
    elif userGuess < number or userGuess == 0:
        print("You've guessed too low, please try again ")
        userGuess = int(input("Guess a number from 1 - 3 "))
        if userGuess == number:
            print("Congratulations! You've guessed correctly! ")
            continueProgram = False
    else:
        print("Congratulations " + userName + "! " + "You've guessed correctly! ")
        continueProgram = False