变量名给出语法错误（Python）

Question

我遇到了一个简单程序问题。

num2 = 0 
num1 = 1 
print ("Enter a number one after another to sum them up, and when you're done type 0") 
while num1 != 0: 
    num1 = float(raw_input ("Please enter a number:") 
    num2 += num1 
if num1 == 0: 
    print ("The sum of the numbers is:" + str(num2)) 

出于某种原因，“num2 + = num1”这一行在“num2”上给我一个语法错误。

Answer 1

你错过了一个)，右括号，在这里：

num1 = float(raw_input ("Please enter a number:") 

应该

num1 = float(raw_input ("Please enter a number:"))