Python3.7: RegEx for string between strings on multiple lines?

Question

I would like to find 30,850 in:

  <div class='user-information__achievements-heading' data-test-points-title>
    Points
    </div>
    <div class='user-information__achievements-data' data-test-points-count>
    30,850
    </div>
    </div>

with:

^(?!<div class='user-information__achievements-data' data-test-points-count>
|<.div>)(.*)$

(returns nothing)

How come ^(?!START\-OF\-FIELDS|END\-OF\-FIELDS)(.*)$ does work for:

START-OF-FIELDS
<div>
Line A
END-OF-FIELDS

(returns <div>)?

I do hope you're not trying to [parse HTML with regex...](https://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags) — Daniel Roseman, Oct 05 '18 at 09:30

score 1 · Answer 1 · answered Oct 05 '18 at 09:39

Besides I totally agree to never parse HTML with re (and it's really fun to read, btw) if you only have this piece of text and need a quick re.search, a simple r'\d+,\d+' would do...:

import re

s = '''<div class='user-information__achievements-heading' data-test-points-title>
    Points
    </div>
    <div class='user-information__achievements-data' data-test-points-count>
    30,850
    </div>
    </div>'''

re.search(r'\d+,\d+', s)
<re.Match object; span=(179, 185), match='30,850'>

score 1 · Answer 2 · answered Oct 05 '18 at 09:52

1

No need for regex just do:

i="    <div class='user-information__achievements-data' data-test-points-count>"
print(s.splitlines()[s.splitlines().index(i)+1].lstrip())

Output:

30,850

answered Oct 05 '18 at 09:52

U13-Forward

69,221
14
89
114

score 1 · Accepted Answer · answered Oct 06 '18 at 02:12

You also can search text by bs4

from bs4 import BeautifulSoup

tx = """
  <div class='user-information__achievements-heading' data-test-points-title>
    Points
    </div>
    <div class='user-information__achievements-data' data-test-points-count>
    30,850
    </div>
    </div>
"""

bs = BeautifulSoup(tx,"lxml")
result = bs.find("div",{"class":"user-information__achievements-data"}).text
print(result.strip()) # 30,850

score 0 · Answer 4 · answered Oct 05 '18 at 09:41

0

You want re.DOTALL because by default . doesn't match newlines and line brakes.

re.compile(YOUR_REGEX, flags=re.S)

You can also prepend your regex with (?s) for the same effect.

answered Oct 05 '18 at 09:41

iBug

35,554
7
89
134

Python3.7: RegEx for string between strings on multiple lines?

4 Answers4