How to write match nth grouped subexpression?

Newsgroups	comp.lang.python
Date	2014-07-10 01:57 -0700
Message-ID	<53ada36b-e1ce-4487-b9ac-0a162e3da8c3@googlegroups.com> (permalink)
Subject	How to write match nth grouped subexpression?
From	rxjwg98@gmail.com

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Hi,

It says that: match checks for a match only at the beginning of the string.
Then, it also says that: \1...\9	Matches nth grouped subexpression.

I don't know how to write a script to include grouped subexpression in match?


Thanks,

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How to write match nth grouped subexpression? rxjwg98@gmail.com - 2014-07-10 01:57 -0700
  Re: How to write match nth grouped subexpression? Cameron Simpson <cs@zip.com.au> - 2014-07-10 19:50 +1000

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