NameError：猜测未定义答案

【问题标题】：NameError: guesses not definedNameError：猜测未定义
【发布时间】：2016-02-08 18:08:34
【问题描述】：

我刚刚开始使用 python，我想知道为什么我的变量猜测没有定义。我觉得好像这是一个缩进问题，但是一旦我更改了缩进，我通常会遇到语法错误，任何理解这个问题的帮助将不胜感激。

import random

def game():

  guesses = []
  secret_num = random.randint(1, 10)

while len(guesses) < 5:
  try:
     guess = int(input("Guess a number between 1 and 10 "))
  except ValueError:
     print("{} isn't a number!".format(guess))
  else:
      if guess == secret_num:
          print("You got it! My number was {}".format(secret_num))
          break
      elif guess < secret_num:
          print("My number is higher than {}".format(guess))

      else:
          print("My number is lower tha {}".format(guess))
      guesses.append(guess)
else:
    print("You didn't get it my secret number was {}".format(secret_num))
play_again = input("Do you want to play again? Y/N")
if play_again.lower() != 'n':
   game()
else:
    print("Bye thanks for playing!")

【问题讨论】：

函数 game() 中的所有内容都必须在该函数下一致缩进。您的 while 循环存在于该函数之外，并且猜测仅在该函数内具有范围。

标签： python nameerror

【解决方案1】：

这不会在我的计算机上引发任何错误。请注意，如果您想实际运行代码，则必须调用 game() 函数。

import random

def game():

    guesses = []
    secret_num = random.randint(1, 10)

    while len(guesses) < 5:
      try:
         guess = int(input("Guess a number between 1 and 10 "))
      except ValueError:
         print("{} isn't a number!".format(guess))
      else:
          if guess == secret_num:
              print("You got it! My number was {}".format(secret_num))
              break
          elif guess < secret_num:
              print("My number is higher than {}".format(guess))

          else:
              print("My number is lower tha {}".format(guess))
          guesses.append(guess)
    else:
        print("You didn't get it my secret number was {}".format(secret_num))
    play_again = input("Do you want to play again? Y/N")
    if play_again.lower() != 'n':
       game()
    else:
        print("Bye thanks for playing!")

game()   # to run the code

【讨论】：