模块化猜猜游戏循环答案

【问题标题】：Modular Guess the game loop模块化猜猜游戏循环
【发布时间】：2019-09-09 11:06:18
【问题描述】：

在我的代码的选项 2 部分中，我的循环无法正常运行，我无法弄清楚原因。它不断要求再次输入。我尝试将输入移到循环之外，但这也不起作用。

 import random      

def display_menu():
        print("Welcome to my Guess the Number Program!")
        print("1. You guess the number")
        print("2. You type a number for the computer to guess.")
        print("3. Exit")
        print()

def main():
    display_menu()
    option = int(input("Enter a menu option: "))

用户对计算机随机生成的数字进行拍照，直到用户得到正确答案。输出用户猜测和尝试次数，直到猜测正确

    if option == 1:

        number = random.randint(1,10)
        counter = 0

        while True:
            try:        
                guess = input("Guess a number between 1 and 10: ")
                guess = int(guess)
                print()
                if guess < 1 or guess > 10:
                    raise ValueError()
                counter += 1
                if guess > number:
                    print("Too high.")
                    print()
                elif guess < number:
                    print("Too low.")
                    print()
                else:
                    print("You guessed it!")
                    print("You guessed the number in", counter, "attempts!")
                    break
            except ValueError:
                print(guess, "is not a valid guess")
                print()

选项 2.，用户输入一个数字供计算机猜测。计算机猜测给定范围内的数字。输出计算机猜测和猜测次数，直到计算机得到正确的数字。

    if option == 2:
        print("Computer guess my number")
        print()


        while True:
            try:
                my_num = input("Enter a number between 1 and 10 for the computer to guess: ")
                my_num = int(my_num)
                counter = 0
                counter += 1
                print()
                comp = random.randint(1,10)
                if my_num < 1 or my_num > 10:
                    raise ValueError()

                if comp > my_num:
                    print("Computer guessed", comp,"to High")

                elif comp < my_num:
                    print("Computer guessed", comp,"to Low")

                else:
                    print("Computer guessed the right number!" , comp)
                    print("Computer guessed the right number in", counter, "attempts!")
                    break

            except ValueError:
                print(my_num, "is not a valid entry")
                print()
                continue
    """
    Ends game
    """
    if option == 3:
        print("Goodbye")


if __name__ == '__main__':
    main()

【问题讨论】：

标签： python loops

【解决方案1】：

您应该在循环之前要求输入。 counter 也应该在循环之前初始化。

if option == 2:
    print("Computer guess my number")
    print()

    # these three lines will be run once before the loop
    my_num = input("Enter a number between 1 and 10 for the computer to guess: ")
    my_num = int(my_num)
    counter = 0

    while True:
        try:
            comp = random.randint(1,10)
            counter += 1
            print()
            if my_num < 1 or my_num > 10:
                raise ValueError()

            if comp > my_num:
                print("Computer guessed", comp,"to High")

            elif comp < my_num:
                print("Computer guessed", comp,"to Low")

            else:
                print("Computer guessed the right number!" , comp)
                print("Computer guessed the right number in", counter, "attempts!")
                break

        except ValueError:
            print(my_num, "is not a valid entry")
            print()
            continue

顺便说一句，您可以使用binary search 来改进计算机的猜测，而不是随机猜测，其中尝试次数有上限。

【讨论】：