剛學(xué)python，實(shí)驗(yàn)書上的2個(gè)小程序遇到的問(wèn)題

wuqt

第一個(gè)：  if 語(yǔ)句，完全按照書上的書寫

#!/usr/bin/python
# Filename: if.py

number = 23
guess = int(input('Enter an integer : '))

if guess == number:
    print('Congratulations, you guessed it.') # New block statrs here
        print('(but you do not win any prizes!)') # New block ends here
elif guess < number:
    print('No, it is a little higher than that') # Another block
        # You can do whatever you want in a block ...
else:
    print('No, it is a little lower than that')
        # You must have guess > number to reach here
print('Done')

執(zhí)行后報(bào)錯(cuò)：

root@ubuntu:~$ python if
  File "if", line 9
    print('(but you do not win any prizes!)') # New block ends here
    ^
IndentationError: unexpected indent

第二個(gè)： while語(yǔ)句
#!/usr/bin/python
# Filename while.py

number == 23
running = Ture

while running:
    guess = int(input("Enter a integer: '))
       
        if guess == number:
            print('Congratulations, you guessed it.')
                running = False #thi cause the wile loop to stop
        elif guess < number:
            print('No, it is a little higher than that.')
else:
    print('The while loop is over.')
        # Do anything else you want to do here
print('Done')

執(zhí)行后報(bào)錯(cuò)：
root@ubuntu:~$ python while
  File "while", line 8
    guess = int(input("Enter a integer: '))
                                          ^
SyntaxError: EOL while scanning string literal

請(qǐng)各位高人指點(diǎn)。 多謝！

OwnWaterloo

python縮進(jìn)敏感， 所以

1. 
   
2. if guess == number:
   
3.     print('Congratulations, you guessed it.') # New block statrs here
   
4.         print('(but you do not win any prizes!)') # New block ends here
   

復(fù)制代碼

改為：

1. 
   
2. if guess == number:
   
3.     print('Congratulations, you guessed it.') # New block statrs here
   
4.     print('(but you do not win any prizes!)') # New block ends here
   

復(fù)制代碼

第2個(gè)： EOL(end of line) while scanning string literal
掃描string literal時(shí)遇見(jiàn)了行結(jié)束。

string literal的delimiter沒(méi)有匹配：
int(input("Enter a integer: '))

starzhestarzhe

沒(méi)看也樓上兩個(gè)有啥區(qū)別

a515200

~~~~~~~~~~~~~~~

flying_away

input() 可以輸入字符串

icykiss

第一個(gè)，二樓說(shuō)對(duì)了，不過(guò)，第二個(gè)，可不只這個(gè)問(wèn)題。看下面：

1. #!/usr/bin/python
   
2. # Filename while.py
   
3. 
   
4. number = 23
   
5. running = True
   
6. 
   
7. while running:
   
8.     guess = int(input("Enter a integer: "))
   
9.     if guess == number:
   
10.         print('Congratulations, you guessed it.')
    
11.         running = False #thi cause the wile loop to stop
    
12.     elif guess < number:
    
13.         print('No, it is a little higher than that.')
    
14. else:
    
15.     print('The while loop is over.')
    
16.         # Do anything else you want to do here
    
17. print('Done')

復(fù)制代碼

icykiss

你的 number 不應(yīng)該是 ＝＝ 23，running 是True，不是Ture，還有注意縮進(jìn)和單雙引號(hào)對(duì)應(yīng)。

螺旋劍

我學(xué)習(xí)python的最大感觸就是不要用tab鍵縮進(jìn)哦，去python社區(qū)看下“八榮八恥”吧��！

wuqt

回復(fù) 2# OwnWaterloo


    感謝指點(diǎn)！明白啦！

wuqt

你的 number 不應(yīng)該是 ＝＝ 23，running 是True，不是Ture，還有注意縮進(jìn)和單雙引號(hào)對(duì)應(yīng)。
icykiss 發(fā)表于 2010-09-18 14:57

    非常感謝你的解答，我已經(jīng)改正了縮進(jìn)和拼寫�，F(xiàn)在遇到一個(gè)新的問(wèn)題。

Traceback (most recent call last):
  File "while", line 4, in <module>
    number == 23
NameError: name 'number' is not defined


我要在number前定義number為什么類型嗎？ 書上為什么沒(méi)寫呀？