Question

我无法弄清楚为什么我遇到这种语法错误。它表示数字未定义，但“数字”设置为“raw_input”。谁能帮我吗？这是代码和错误消息 -

def main():

number = raw_input('I have a number between 1 and 10. Can you guess it? Please type your first guess: ')

guess(number)


def guess(number):
    randomNumber = random.randrange(1,10)


 correct = False

while not correct:

if number > randomNumber:
        print'Too High. Try again.'
    elif number < randomNumber:
        print'Too Low. Try again.'
    elif number == randomNumber:
        print'Correct!'

playAgain = raw_input('Excellent! You guessed the number! Would you like to play again (y or n)? ')
        if playAgain == 'y':
            main()



Traceback (most recent call last):
  File "<pyshell#48>", line 2, in <module>
    if number > randomNumber:
NameError: name 'number' is not defined

Answer 1

我不知道您在哪里获得当前错误，因为在尝试运行代码时遇到了不同的语法错误。话虽如此，这里有很多问题，而不仅仅是number的分配。

在Python中，缩进控制代码中的语句的执行方式。 def和if之类的内容必须缩进，否则会导致语法或逻辑错误。

This page words it better than I do.

在您当前的计划中：

def main():为空
number = raw_input( ...超出main()方法
guess(number)也位于main()方法
guess()的大多数都在函数体之外
correct = False与任何其他缩进级别

此外，即使缩进已修复，您当前的代码也不会多次要求用户输入，并且不会在多个guess()来电中保持相同的目标号码。 main()方法也未被调用。

试试这个：

import random

def main():

    guess()


def guess():

    number = int(raw_input('I have a number between 1 and 10. Can you guess it? Please type your first guess: '))
    randomNumber = random.randrange(1,10)

    while true:

        if number > randomNumber:
            print 'Too High. Try again.'
        elif number < randomNumber:
            print 'Too Low. Try again.'
        elif number == randomNumber:
            print 'Correct!'
            break

        number = int(raw_input('I have a number between 1 and 10. Can you guess it? Please type next guess: '))

    playAgain = raw_input('Excellent! You guessed the number! Would you like to play again (y or n)? ')

    if playAgain == 'y':

        main()


main()

尝试创建随机数生成游戏时出现语法错误

1 个答案: