In python3, how do I match exactly whitespace character and not newline \n or tab \t?
I've seen the
<_sre.SRE_Match object; span=(4, 6), match='\ns'>
If you want to match 1 or more whitespace chars except the newline and a tab use
[^\S] matches any char that is not a non-whitespace = any char that is whitespace. However, since the character class is a negated one, when you add characters to it they are excluded from matching.
import re a='rasd\nsa sd' print(re.findall(r'[^\S\n\t]+',a)) # => [' ']
Some more considerations:
[ \t\n\r\f\v] if ASCII flag is used. So, if you plan to only match ASCII, you might as well use
[ \r\f\v] to exclude the chars you want. If you need to work with Unicode strings, the solution above is a viable one.