SyntaxError: 非 ASCII 字符 '\\xe2' 只需复制到另一个项目

Question

I got this error after copying the content to another project:

SyntaxError: Non-ASCII character '\xe2' in file ***/PostToIn.py on line 81, but no encoding declared;
see http://python.org/dev/peps/pep-0263/ for details

The content's code is:

exp = "9 √ 3 ="

This SyntaxError still popped up even though I commented this line as the following:

# exp = "9 √ 3 ="

But the same line in the original project could run smoothly without any error.

What's the matter, please?

Thanks a lot!

Answer 1

The string you have there has a non-ascii character √ which python can't parse. The solution is to replace it with \\xe2 which will then expand to √ when the code runs. So the fixed code should look like this:

exp = u"9 \xe2 3 ="

The other solution is to tell python the string you have is actually UTF-8 by prefixing it with a u.

exp = u"9 √ 3 ="