Python 变量未定义？

我是python的早期初学者，需要一些帮助。游戏的重点是猜一个数字，如果不正确，NUMGUESS加1。我知道代码不是很有效，但我需要它的一个项目。代码如下：

import random

from datetime import datetime
answer = random.randint(1, 2)
guess = 0
now = datetime.now()
play = 'y'


print 'Welcome to Hi-Lo'
print 'The current time is: ' '%s-%s-%s' % (now.year, now.month, now.day)

while play != 'n':
while guess != answer:
    guess =  int(input('Pick a number inbewteen 1-100 to see if its higher or lower:'))
    if guess == answer:
        numguesses = numguesses + 1
        print 'You are correct! The number was: ' + str(answer)
        print 'It took ' + str(numguesses) + ' guess(es)'
    elif guess > answer:
        print 'Too high'
    else:
        print 'Too low'

play = str(input('Play again? [y/n]?'))

它产生的误差是：

Traceback (most recent call last):
  File "C:-----------------------------.py", line 17, in <module>
numguesses = numguesses() + 1

回溯（最近一次呼叫最后一次）：
文件“C:----------------------------.py”，第17行，在
numguesses=numguesses（）+1

NameError:未定义名称“numgueses”

---

因此，如果有人能对此提供一个简单的解释，我将不胜感激。谢谢

在增加数值之前，必须先设置数值。试试这个：

import random

from datetime import datetime
answer = random.randint(1, 2)
guess = 0
numguesses = 0
now = datetime.now()
play = 'y'


print 'Welcome to Hi-Lo'
print 'The current time is: ' '%s-%s-%s' % (now.year, now.month, now.day)

while play != 'n':
    while guess != answer:
        guess =  int(input('Pick a number inbewteen 1-100 to see if its higher or lower:'))
        if guess == answer:
            numguesses = numguesses + 1
            print 'You are correct! The number was: ' + str(answer)
            print 'It took ' + str(numguesses) + ' guess(es)'
        elif guess > answer:
            print 'Too high'
        else:
            print 'Too low'

    play = str(input('Play again? [y/n]?'))

numguesses = 0
while guess != answer:
    guess =  int(input('Pick a number inbewteen 1-100 to see if its higher or lower:'))
    if guess == answer:
        numguesses = numguesses + 1

---

在第一个while循环中嵌套第二个while循环时，在缩进中还发生了另一个错误。我也解决了这个问题。

您必须给

numguesss

一个起始值。试试这个：

import random

from datetime import datetime
answer = random.randint(1, 2)
guess = 0
numguesses = 0
now = datetime.now()
play = 'y'


print 'Welcome to Hi-Lo'
print 'The current time is: ' '%s-%s-%s' % (now.year, now.month, now.day)

while play != 'n':
    while guess != answer:
        guess =  int(input('Pick a number inbewteen 1-100 to see if its higher or lower:'))
        if guess == answer:
            numguesses = numguesses + 1
            print 'You are correct! The number was: ' + str(answer)
            print 'It took ' + str(numguesses) + ' guess(es)'
        elif guess > answer:
            print 'Too high'
        else:
            print 'Too low'

    play = str(input('Play again? [y/n]?'))

numguesses = 0
while guess != answer:
    guess =  int(input('Pick a number inbewteen 1-100 to see if its higher or lower:'))
    if guess == answer:
        numguesses = numguesses + 1

只需在while循环之前添加

numguesss=0

。在使用变量之前，必须声明变量

  1 #!/usr/bin/env python
  2
  3 import random
  4 from datetime import datetime
  5
  6 answer = random.randint(1, 2)
  7 guess = 0
  8 # You need to define and initialise numguesses before you can increment below by 1
  9 numguesses = 0
 10 now = datetime.now()
 11 play = 'y'
 12
 13 print 'Welcome to Hi-Lo'
 14 print 'The current time is: ' '%s-%s-%s' % (now.year, now.month, now.day)
 15
 16 while play != 'n':
 17   while guess != answer:
 18     guess =  int(input('Pick a number inbewteen 1-100 to see if its higher or lower:'))
 19     if guess == answer:
 20         numguesses = numguesses + 1
 21         print 'You are correct! The number was: ' + str(answer)
 22         print 'It took ' + str(numguesses) + ' guess(es)'
 23         # after the user has guessed correctly, it will start all over again
 24         # hence you need to reset 'guess' and 'numguesses'
 25         guess = 0
 26         numguesses = 0
 27         play = raw_input('Play again? [y/n]? ')
 28         # and you need to get out of the loop altogether if user selects 'n'
 29         break
 30     elif guess > answer:
 31         print 'Too high'
 32         # everytime guess fails, numguesses needs to be increased by 1
 33         numguesses = numguesses + 1
 34     else:
 35         print 'Too low'
 36         # everytime guess fails, numguesses needs to be increased by 1
 37         numguesses = numguesses + 1

---

请阅读代码中的注释

numguesss

从来没有初始值，因此如何向其添加1？在

while

循环之前，需要

numguesss=0

。错误消息与脚本中的行不匹配。为什么在

numguesss

之后有

（）

？您还需要在播放时缩进

的主体！='n'

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