Why am I getting a `SyntaxWarning: invalid escape sequence \s` warning?

Question

re.compile('\s+', flags = re.UNICODE)

The above code gives the following warning in python3.

SyntaxWarning: invalid escape sequence \s

I fix it by using r'\s+'. Is it a correct way to fix the problem?

Answer 1

Yes, that is. You can either use a raw string r'\s+' or alternatively escape the backslash with '\\s+'.