REGEX remove blank lines:
FROM: http://www.ultraedit.com/support/tutorials_power_tips/ultraedit/remove_blank_lines.html
FIND:
^(?:[\t ]*(?:\r?\n|\r))+
REPLACE:
[LEAVE THIS EMPTY BECAUSE YOU DO NOT WANT TO REPLACE WITH ANYTHING]
(Related: If you happen to be where you can use AWK, you can use awk NF.
If you happen to be where you can use SED, you can use sed /^$/d' --
EXAMPLE USE OF SED sed /^$/d < text_with_blanks.txt > no_blanks.txt.)
If the line contains a line feed at the end this won't pick it up. Either will my attempt ^[ \t]*$\r?\n
Thank you!
Thank you!
Thanks mate
You can just use ^\s$ to match blank lines...
You can just use
^\s$to match blank lines...
That's not a blank line. It's a line with exactly one whitespace character.
You can just use
^\s$to match blank lines...That's not a blank line. It's a line with exactly one whitespace character.
Oh... What about ^$?
Nope. A simple test would have shown it doesn't work. That's basically matching a zero width character. So replacing it with nothing has no effect. Here is a good thread to perhaps learn a bit more about removing empty lines. https://stackoverflow.com/questions/3866034/removing-empty-lines-in-notepad
This works for me (note the multiline flag):
EMPTY_LINES = re.compile(r'\n\s*\n', re.MULTILINE)
result = EMPTY_LINES.sub('\n', content)
Nope. A simple test would have shown it doesn't work. That's basically matching a zero width character. So replacing it with nothing has no effect. Here is a good thread to perhaps learn a bit more about removing empty lines. https://stackoverflow.com/questions/3866034/removing-empty-lines-in-notepad
Would this work: ^ *$? It should match the start of a string, then any amount of whitespace, then the end of a string.
Nope, that's still a line the contains a whitespace. It's not a blank line.
thats really helpful and I have replaced with a \n for my own convenience
Thanks!!!!
super helpful. big thanks
Thank you so much