Perform Simple Javascript Regex in Python

Question

How to perform this javascript regex into Python (3.2)?

exmple_string.replace(/-/g, '.').replace(/(^|\.)([0-9]+)($|\.)/g, '[$2]$3');

The regex should work as following:

I tried the re library, but don't know how to peform the periods [$2]$3

Have you looked at re.sub? It should be pretty straight-forward. . . — mgilson
– mgilson, Commented Sep 24, 2014 at 17:32
I've tried u = pattern.replace('-', '.') v = re.sub(r'(^|\.)([0-9]+)($|\.)', r'[$2]$3', u) but got no success, the periods do not work — user1538560
– user1538560, Commented Sep 24, 2014 at 17:33
In python, use a slash instead of dollar to refer to groups: r[\2]\3. — georg
– georg, Commented Sep 24, 2014 at 17:46

justengel · Accepted Answer · 2014-09-24 17:47:09Z

0

import re

value = "55-fathers-2-married"
value = value.replace("-", ".")
re.sub(r"(^|\.)([0-9]+)($|\.)", r"[\2]\3", value)

Test your regex with the python regex tool. http://www.pythonregex.com/

answered Sep 24, 2014 at 17:34

justengel

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