CODEWITHSUNDEEP
pythonregex
user4647247
user4647247

Reputation:

Python regex match month, date, time

I am new to python and trying to make a simple but understandable regex to match a file containing these lines:

Month(2 letters), day and time

Sep 15 04:34:02

Regex so far: I have managed to match the month, but dont know how to match the space and the digits. Hope someone can help me with this:

  with open('file.txt','r') as file:
            for line in file:
                    fil = re.findall('^\D{3}\d{1,2}',line)
                    print " ".join(fil)

Upvotes: 1

Views: 3873

Answers (2)

karthik manchala
karthik manchala

Reputation: 13640

You can use the following:

^\D{3}\s+\d{1,2}\s+\d{2}(:\d{2}){2}

Explanation:

  • \D{3} any three non digits
  • \s+ one or more white spaces
  • \d{1,2} one to two digits
  • \d{2} exactly two digits
  • (:\d{2}){2} two occurrences of (: followed by two digits)

RegEx Demo

Tip 1: To make it more accurate replace \D with [a-zA-Z] because you dont want to allow any non digits here..

Tip 2: You would also want to use [0-2]\d(:[0-5]\d){2} for matching time..

Final regex:

^[a-zA-Z]{3}\s+\d{1,2}\s+[0-2]\d(:[0-5]\d){2}

Upvotes: 3

emartinelli
emartinelli

Reputation: 1047

Try it:

[A-Za-z]{3}\s\d{1,2}\s(?:\d{1,2}:){2}\d{1,2}

[A-Za-z]{3} -> three letters -> Sep

\s -> space

\d{1,2} -> two digits -> 15

\s -> space

(?:\d{1,2}:){2}\d{1,2} -> time -> 04:34:02

DEMO

Upvotes: 1

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