我在做什麼錯？請

Question

我做錯了什麼？

num = [] 
inp = raw_input("please enter a series of numbers separated by a space\n") 
num = [ int(i) for i in inp.split()] 
print(num) 

quit_program = input("Would you like the average or would you like to quit?") 
if quit_program == quit: 
    quit() 
elif quit_program == average: 
    print mean(num) 

口口聲聲說這

quit_program = input("Would you like the average or would you like to quit?") 
    File "<string>", line 1, in <module> 
NameError: name 'average' is not defined 

Answer 1

你的堆棧跟蹤說：

在線：quit_program = input("<snip>")它獲得誤差NameError: name 'average' is not defined當你鍵入average。

在Python2.7

input()運行任何你輸入（它相當於eval(raw_input())。在這種情況下，它試圖運行average這是用戶的輸入。你只想raw_input()。

然後你要比較的是輸入爲字符串，因爲人們建議：。

quit_program = raw_input("Would you like the average or would you like to quit?") 
if quit_program == "quit": 
    quit() 
elif quit_program == "average": 
    print mean(num) 

Answer 2

還沒有定義退出和平均。 您正在檢查用戶輸入，它是一個字符串。 字符串需要「引號」在他們周圍。 這是件好事： 「我是一個字符串」 這是不好： 我不是一個字符串