How to remove all whitespaces except new lines with regex

Question

I wrote a code where I replaced all the whitespaces with new lines from a.txt file which is basically a novel. Doing this, seperated the words in new lines for me, but there are some empty lines and I want to remove those. So I am trying to remove all the whitespaces except the new lines. How might I do that using regex?

First I did this to replace whitespaces with new lines:

text= re.sub(r'\s',r'\n',text)

Then I tried this to remove empty lines which is not doing the job actually:

text= re.sub(r'(\s)(^\n)',"",text)

Answer 1

You may use:

text = re.sub(r'[^\S\r\n]+', '', text)

The regex pattern [^\S\r\n]+ will match any whitespace character (read not \S , which means \s ) except for newlines and carriage returns.