爲什麼在編譯單個語句錯誤時發現多個語句？ （Python）

Question

我一直在Python 3.3.1版本的這個基本計算器程序中出現錯誤。我自己找不到問題，有人可以幫我嗎？非常感謝您提前！

x=(input("Which operation would you like to perform?")) 
     if x=='Addition': 
     y=int(input("Enter the first number?")) 
     z=int(input("Enter the second number?")) 
     a=y+z 
     print(a) 
    elif x=='Subtraction': 
     y=int(input("Enter the first number?")) 
     z=int(input("Enter the second number?")) 
     a=y-z 
     print(a) 
    elif x=='Multiplication': 
     y=int(input("Enter the first number?")) 
     z=int(input("Enter the second number?")) 
     a=y*z 
     print(a) 
elif x=='Division': 
     y=int(input("Enter the first number?")) 
     z=int(input("Enter the second number?")) 
     a=y/z 
     print(a) 

Answer 1

你的選項卡搞砸了，我認爲，嘗試這樣的事情：

x=input("Which operation would you like to perform?") 
if x=='Addition': 
    y=int(input("Enter the first number?")) 
    z=int(input("Enter the second number?")) 
    a=y+z 
    print(a) 
elif x=='Subtraction': 
    y=int(input("Enter the first number?")) 
    z=int(input("Enter the second number?")) 
    a=y-z 
    print(a) 
elif x=='Multiplication': 
    y=int(input("Enter the first number?")) 
    z=int(input("Enter the second number?")) 
    a=y*z 
    print(a) 
elif x=='Division': 
    y=int(input("Enter the first number?")) 
    z=int(input("Enter the second number?")) 
    a=y/z 
    print(a) 

Answer 2

x= raw_input("Which operation would you like to perform?")將解決烏爾問題

編輯：Python 3中的raw_input更名爲輸入（）來獲取舊行爲使用eval(input(....))參考http://docs.python.org/3.0/whatsnew/3.0.html#builtins

希望這會有所幫助