Regular Expressions 101

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Regular Expression

r"
(?:^|\b(?<!\.))(?:1?\d?\d|2[0-4]\d|25[0-5])(?:\.(?:1?\d?\d|2[0-4]\d|25[0-5])){3}(?=$|[^\w.])
"
gm

Description

Found in here, stackoverflow url .

Submitted by Anonymous