为什么下面的Python不工作？

Question

下面的Python代码被写入生成对55 1之间的三角数字，但编码不工作，为什么？

num = 1 
sum = 0 
while (num <= 10) 
    sum = sum + num 
    num = num + 1 
print (sum, end=' ') 

Answer 1

缺少冒号：

num = 1 
sum = 0 
while (num <= 10): 
    sum = sum + num 
    num = num + 1 
print (sum, end=' ') 

或

num = 1 
sum = 0 
while (num <= 10): 
    sum = sum + num 
    num = num + 1 
    print (sum, end=' ') 

输出

1 3 6 10 15 21 28 36 45 55 

对于2.7

num = 1 
sum = 0 
while (num <= 10): 
    sum = sum + num 
    num = num + 1 
    print sum, 

Answer 2

你的错误是，默认情况下不使用Python 2.x的支持是不跟while语句错误，随后()包装和印刷结束

更正后的代码是：

num = 1 
sum = 0 
while (num <= 10): 
    sum = sum + num 
    num = num + 1 

print sum