Can't extract the numbers from the last bracket of each line using regex

Question

I'm trying to fetch the numbers within the last bracket of each line in a block of text. However, my current approach only fetch me the numbers of the last bracket.

I've tried with (the numbers may be of any digit):

import re

items = """
PTT KBALTHNAL (07) PETROL STATION (500003985)
ZHONGGUO (035) SHAXIAN 01 (5001039)
AHARATHAN BAIJIAING (0837) SU YOUMING (500086)
"""
ids = re.findall(r"\((\d+)\)$",items)
print(ids)

Output I get:

['500086']

Output I'm after:

['500003985','5001039','500086']

How can I extract the numbers from the last bracket of each line?

`re.findall(r"$(\d+)$$",items, re.M)`. Or do not use `re.M` and use `(?:$|\n)` — Wiktor Stribiżew, Apr 17 '20 at 10:50

Joshua Varghese · Answer 1 · 2020-04-18T10:00:43.947

1

Lets do this by including only the last brackets of the string :

items = 'PTT KBALTHNAL (07) PETROL STATION (500003985)\nZHONGGUO (035) SHAXIAN 01 (5001039)\nAHARATHAN BAIJIAING (0837) SU YOUMING (500086)'

Here (?!.) excludes every occurences just after newline:

re.findall('\((\d+)\)(?!.)',items)

Here, we find digits with brackets,ending by new-line.
this gives you:

['500003985', '5001039', '500086']

edited Apr 18 '20 at 10:00

answered Apr 17 '20 at 10:52

Joshua Varghese

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`r"$(\d+)$\n"` is wrong because you will never get a match on the last line. Do not repost others' wrong solutions if you do not understand them. – Wiktor Stribiżew Apr 17 '20 at 11:20
it gave the solution. i tested that – Joshua Varghese Apr 17 '20 at 11:21
So, you did not even test it properly. You get [2 values](https://ideone.com/belZSo), not 3. – Wiktor Stribiżew Apr 17 '20 at 11:21
I got 3 values. – Joshua Varghese Apr 17 '20 at 11:22
Yes, because you did not test if it matches at the end of the string. – Wiktor Stribiżew Apr 17 '20 at 11:23
@WiktorStribiżew i edited the answer. now is it ok? – Joshua Varghese Apr 17 '20 at 11:27
Now it is just a wrong solution not answering the current question because `r"$(\d+)$"` matches at any position inside the string, and there is no guarantee the valid matches are even ones. – Wiktor Stribiżew Apr 17 '20 at 11:28

Can't extract the numbers from the last bracket of each line using regex

1 Answers1