Capturing repeating subpatterns in Python regex

Question

While matching an email address, after I match something like yasar@webmail, I want to capture one or more of (\.\w+)(what I am doing is a little bit more complicated, this is just an example), I tried adding (.\w+)+ , but it only captures last match. For example, [email protected] matches but only include .tr after yasar@webmail part, so I lost .something and .edu groups. Can I do this in Python regular expressions, or would you suggest matching everything at first, and split the subpatterns later?

Answer 1

re module doesn't support repeated captures (regex supports it):

>>> m = regex.match(r'([.\w]+)@((\w+)(\.\w+)+)', '[email protected]') >>> m.groups() ('yasar', 'webmail.something.edu.tr', 'webmail', '.tr') >>> m.captures(4) ['.something', '.edu', '.tr'] 

In your case I'd go with splitting the repeated subpatterns later. It leads to a simple and readable code e.g., see the code in @Li-aung Yip's answer.