How to change date format of a date inside a string?

Question

I have a string "Hello please change the date from 04/24/2017 by putting month in the middle"

class Paragraph:

    @staticmethod
    def change_date_format(paragraph):
        return None

print(Paragraph.change_date_format('Hello please change the date from 04-24-2017 by putting month in the middle'))

I need to change this to "Hello please change the date from 24/04/2017 by putting month in the middle"

Please refer the link [https://stackoverflow.com/questions/14524322/how-to-convert-a-date-string-to-different-format](https://stackoverflow.com/questions/14524322/how-to-convert-a-date-string-to-different-format) — dmp, Sep 12 '17 at 11:49
I have a sentence which has "Hello today is 07/14/2017". I have to change this to "Hello today is 14/07/2017". @Alex — Padmaja Ganesh, Sep 12 '17 at 11:51

Błotosmętek · Accepted Answer · 2017-09-12T12:48:33.227

0

import re
def change_date_format(paragraph):
    return re.sub('(\d+)/(\d+)/(\d+)', 
        lambda m: '{}/{}/{}'.format(m.group(2), m.group(1), m.group(3)), 
        paragraph)

This finds a sequence of three groups of digits separated by slashes (like 04/27/2017), then uses format to swap the first and second group.

edited Sep 12 '17 at 12:48

answered Sep 12 '17 at 11:54

Błotosmętek

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Please add an explanation for your code. – bfontaine Sep 12 '17 at 12:44
@bfontaine I thought it's rather self-explaining. – Błotosmętek Sep 12 '17 at 12:46
If someone doesn’t know `re.sub` nor `lambda` it’s not. – bfontaine Sep 12 '17 at 12:48

jss367 · Answer 2 · 2017-09-12T15:11:37.330

-1

datetime can do this:

import datetime
def change_date_format(date):
        return datetime.datetime.strptime(date, '%m/%d/%Y').strftime('%d/%m/%Y')

edited Sep 12 '17 at 15:11

answered Sep 12 '17 at 11:52

jss367

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How to change date format of a date inside a string?

2 Answers2