Extracting integer values from a string on Python

Question

I've been through every post I could find on the subject and nothing have answered my problem;

This is the code:
output = 'Scan results for BrainS (192.168.43.111) Scan results for Slave (192.168.43.107) Scan results for SlaveSmall (192.168.43.242)' while (True) if output[i].isdigit(): # i has initial value of 15, j=0 f[j]=output[i] j+=1 i+=1 elsif(i == len(output)): break else: i+=1 continue

Print:
>>>f ['1','9','2','1','6','8','4','3','1','1','1','0','0','0']

As you can see I'm trying to extract the IP as it is with dots(in this code I didnt try to extract the dots but only the numbers), I cant figure out how do get the string I want exactly as it is: f = 192.168.43.111

Any suggestions? better commands?

Regex is the answer: stackoverflow.com/questions/10086572/… — zemekeneng
– zemekeneng, Commented Dec 25, 2016 at 20:41

Sash Sinha · Accepted Answer · 2016-12-25 21:10:18Z

0

For multiple pairs of parenthesis in the string I think it is best to use a regex like so:

import re

output = '''Scan results for BrainS (192.168.43.111) 
            Scan results for Slave (192.168.43.107)
            Scan results for SlaveSmall (192.168.43.242)'''

f = re.findall(r'\(([^()]+)\)',output)
>>>['192.168.43.111', '192.168.43.107', '192.168.43.242']

Try it here!

edited Dec 25, 2016 at 21:10

answered Dec 25, 2016 at 20:40

Sash Sinha

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4 Comments

eyal360 Over a year ago

wow thanks a lot works like a charm,how about if there were several lines like this one? but different IP's. then i'd have a few "(" & ")" , is there a solution to that?

Sash Sinha Over a year ago

Edit your question to show these other lines. The above code only works if there is only one pair of parenthesis in the string.

eyal360 Over a year ago

I've just edited it, I've added the actual output I get, I tried to simplify it before. I hope this can help you understand my question better.

Sash Sinha Over a year ago

That should work @eyal360 , the earlier answer only makes sense for one pair of parenthesis :)

Amjad · Accepted Answer · 2016-12-25 21:03:13Z

0

Here you go, this code will do the job!

output = 'My computer IP is = (192.168.43.111) and yours not.'
ip=[]
ip_flag = False

for x in output:
    if x == '(':
        ip_flag = True
        continue
    if ip_flag:
        if x != ')':
            if x != '.': # remove this line of you want the dots
                ip.append(x)
        else:
            break
print(ip)
theIp="" 
for i in ip: 
    theIp+=i

edited Dec 25, 2016 at 21:03

answered Dec 25, 2016 at 20:45

Amjad

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3 Comments

eyal360 Over a year ago

This answer actually gave me the ['1','9','2',...] formation that I didnt want in the first place, but it works good.

Amjad Over a year ago

@eyal360 if you want the dots remove this line if x != '.': if you want a string just add a loop at the end like this theIp="" for i in ip: theIp+=i done

eyal360 Over a year ago

you can't see it because im under 15 Rep , but you got it, its just not shown. [link]s30.postimg.org/8ci2mzhfl/Upvote.jpg

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