I have this text
This is test 2019 -(dsd) g1-d2 720p test
This test 2019 - g1-d2 test
They are separate lines so not together
I am trying to catch all stuff between 2019 and 720p if present
(.+?) ([0-9]{4})(.+?)([0-9]{3,4}p)?(.*)
The problem is group (.+?) is only matching single character. i want it to match till 720p . if use non greedy then it match everything
The output i want is
G1: This is test
G2: 2019
G3: -(dsd) g1-d2
G4: 720p
G5: test
You need to remove the ? quantifier after ([0-9]{3,4}p) as it will make the previous group optional and won't force the engine to match it.
Edit
To match strings with or without 720p, you can enclose (.+?) and ([0-9]{3,4}p) into an optional non-capturing group (?:)?.
Like so:
(.+?)([0-9]{4})(?:(.+?)([0-9]{3,4}p))?(.*)
We can try doing a regex split on the following pattern:
(?=\d{4})|(?<=\d{4}) | (?=\d{3,4}p)|(?<=\d{3}p) |(?<=\d{4}p)
Sample script:
input = "This is test 2019 -(dsd) g1-d2 720p test"
parts = re.split(r' (?=\d{4})|(?<=\d{4}) | (?=\d{3,4}p)|(?<=\d{3}p) |(?<=\d{4}p) ', input)
print(parts)
This prints:
['This is test', '2019', '-(dsd) g1-d2', '720p', 'test']
The idea here is to split using lookarounds which assert, but do not actually consume anything in the input. We split whenever we lookahead or lookbehind and see a 4 digit year, or a 3-4 digit number followed by p.
Just need to play around with your lookbehinds and lookaheads.
(?<=2019)(.+?)(?=720p)
Gives me:
More info about lookahead and lookbehind assertions here.
EDIT:
You can use regex patterns inside lookaheads if you need it to be more flexible. Here's one take:
(?<=[0-9]{4})(.+?)(?=[0-9]{3,4}p)
