If a user inputs a strings with a IP address. I want to extract only the IP For example:
Hello I am localhost 127.0.0.1
I want to get only ip "127.0.0.1" from the whole string, how can i do it? Thanks.
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2Possible duplicate of IP address regex pythonRandy– Randy2017-02-24 18:04:28 +00:00Commented Feb 24, 2017 at 18:04
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2 Answers
Use re :
import re
result = re.findall("\d+\.\d+\.\d+\.\d+", "Hello I am localhost 127.0.0.1")
Output :
['127.0.0.1']
8 Comments
Anand Vyas
how can we do same for the ports?
Jarvis
A port is a fixed 4 digit number, so "\d{4}" would do just fine. And, please mark the answer as accepted if it solved your issue. @AnandVyas
Anand Vyas
Thanks bro :D checking the code and will reply back.
TemporalWolf
Please note this will catch many invalid "ip addresses"
1.2.3.4444, 999.999.999.999, etc.Jarvis
I know, but where do you see
1.2.3.4444 or 999.999.999.999 ? Give me one example and I will edit my answer. @TemporalWolf |
Here's a regex that matches IPv4 addresses:
(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])
You could use it like this
import re
regex = r"(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])"
print(re.search(regex, "string with an ip like 127.0.0.1 in it").group())
