How to write regular expression for all text after ":"

Question

I need to filter the sentence and select only few terms from the whole sentence

For example, I have sample text:

ID: a9000006        
NSF Org     : DMI
Total Amt.  : $225024

Abstract    :This SBIR proposal is aimed at (1) the synthesis of new ferroelectric liquid crystals with ultra-high polarization,                    
             chemical stability and low viscosity

token = re.compile('a90[0-9][0-9][0-9][0-9][0-9]| [$][\d]+ |')
re.findall(token, filetext)

I get 'a9000006','$225024', but I do not know how to write regex for three upper case letter right after "NSF Org:" which is "DMI" and all text after "Abstract:"

A simple split with a limit will be much more efficient than regular expressions. — Klaus D., Feb 18 '19 at 05:10

score 0 · Answer 1 · answered Feb 18 '19 at 06:17

0

If you want to create a single regex which will match each of those 4 fields with explicit checks on each, then use this regex: :\s?(a90[\d]+|[$][\d]+|[A-Z]{3}|.*$)

>>> token = re.compile(r':\s?(a90[\d]+|[$][\d]+|[A-Z]{3}|.*$)', re.DOTALL)  # flag needed
>>> re.findall(token, filetext)
['a9000006', 'DMI', '$225024', 'This SBIR proposal is aimed at (1) the synthesis of new ferroelectric liquid crystals wi
th ultra-high polarization,                    \n             chemical stability and low viscosity']
>>>

However, since you're searching for all at the same time, would be better to use one which matches all 4 together and generically, such as the one in this answer here.

answered Feb 18 '19 at 06:17

aneroid

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Thank you for answering my question, could you tell me what should I write regex if I just want "DMI" after "NSF Org:"? – Xichen Yao Feb 18 '19 at 18:54
That part in the regex is `[A-Z]{3}`. If you want the whole regex for just that part, then split the one I've given along the `|` (optional match conditions, which are rules matching each of the 4 fields). To match only 'DMI', use: `r':\s([A-Z]{3})'` – aneroid Feb 18 '19 at 19:25
Thanks a lot, but i use (r'NSF Org\s*:\s*(.*)') and it works as well – Xichen Yao Feb 18 '19 at 19:42

bumblebee · Answer 2 · 2019-02-18T08:54:39.600

-1

This must do the job.

: .*

You can check this here. check

edited Feb 18 '19 at 08:54

answered Feb 18 '19 at 05:06

bumblebee

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I think that does not match what the OP is looking for https://regex101.com/r/mXoZQs/1 – The fourth bird Feb 18 '19 at 08:25
I have updated my answer – bumblebee Feb 18 '19 at 08:58
But now it matches the colon and the following space as well. – The fourth bird Feb 18 '19 at 09:26

How to write regular expression for all text after ":"

2 Answers2