无效语法？？请问这是什么情况？

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#1 Created at ... [Delete] [Delete and Lock User]

在此插入代码

sum = 0 for x in [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]: ... sum = sum + x ... print(sum) File "<stdin>", line 3 print(sum) ^ SyntaxError: invalid syntax

#2 Created at ... [Delete] [Delete and Lock User]

检查缩进

#3 Created at ... [Delete] [Delete and Lock User]

sum=sum+x行是四个半角空格，print(sum)这行是顶格写哒，是哪个地方写错了~~

#4 Created at ... [Delete] [Delete and Lock User]

在cmd下，这句print(sum)需要在for循环退出时，即：>>>