Regex in python to extract certain codes

Question

I have written a regex in python to extract codes like:

I63.9 J45.909 M18.90 Z82.61 Z82.389 A030 A029 S87.02XD H4010X2 S12530K V675XXS

The regex which I am using is shown below:

import re
data="We have the following codes to extract, I63.9 J45.909 M18.90 Z82.61 Z82.389 A030 A029 S87.02XD H4010X2 S12530K V675XXS September 2018"
regular_expression=re.compile(r'[a-zA-Z]\d{1,2}\.*\d{1,3}\w{0,2}',re.I)
result=value_1.findall(data)
print(result)

Can someone tell me if it is the perfect regex to extract these codes or what could be a better and more robust regex to extract the above codes?

is the requirement for code: an alphabet followed by 1 or 2 digits followed by 0 to n . followed by 1, 2 or 3 digits followed by 0,1 or 2 characters? none of the codes given in the sample needs the last \w{0,2} part of the regex — Matt.G
– Matt.G, Commented Jan 18, 2019 at 16:20
@Matt.G sorry for the confusion. Updated my question. There could also be codes like: S87.02XD H4010X2 S12530K V675XXS — Cathy
– Cathy, Commented Jan 18, 2019 at 16:53
python-reference.readthedocs.io/en/latest/docs/str/split.html — Robert Harvey
– Robert Harvey, Commented Jan 18, 2019 at 17:12

lagripe · Accepted Answer · 2019-01-19 21:26:45Z

2

You can use this regex

pattern = r'[A-Z]+\d+(\.\d+)?(\w+)?'

answered Jan 19, 2019 at 21:26

lagripe

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