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Re: Regex substitution trouble

References <8c1c1b7f-d121-4f3d-adf9-8262ddd8f102@googlegroups.com>
From TP <wingusr@gmail.com>
Date 2014-10-28 06:25 -0700
Subject Re: Regex substitution trouble
Newsgroups comp.lang.python
Message-ID <mailman.15261.1414502744.18130.python-list@python.org> (permalink)

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On Tue, Oct 28, 2014 at 4:02 AM, <massi_srb@msn.com> wrote:

> Hi everyone,
>
> I'm not really sure if this is the right place to ask about regular
> expressions, but since I'm usin python I thought I could give a try :-)
> Here is the problem, I'm trying to write a regex in order to substitute
> all the occurences in the form $"somechars" with another string. This is
> what I wrote:
>
> newstring = re.sub(ur"""(?u)(\$\"[\s\w]+\")""", subst, oldstring)
>
> This works pretty well, but it has a problem, I would need it also to
> handle the case in which the internal string contains the double quotes,
> but only if preceeded by a backslash, that is something like
> $"somechars_with\\"doublequotes".
> Can anyone help me to correct it?
>
> Thanks in advance!
> --
> https://mail.python.org/mailman/listinfo/python-list
>

Carefully reading the Strings section of "Example Regexes to Match Common
Programming Language Constructs" [1] should (with a bit of effort), solve
your problem I think. Note the use of the negated character class for one
thing.

[1] http://www.regular-expressions.info/examplesprogrammer.html

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Thread

Regex substitution trouble massi_srb@msn.com - 2014-10-28 04:02 -0700
  Re: Regex substitution trouble Chris Angelico <rosuav@gmail.com> - 2014-10-28 22:24 +1100
    Re: Regex substitution trouble massi_srb@msn.com - 2014-10-28 05:28 -0700
      Re: Regex substitution trouble Chris Angelico <rosuav@gmail.com> - 2014-10-28 23:59 +1100
      Re: Regex substitution trouble MRAB <python@mrabarnett.plus.com> - 2014-10-28 17:52 +0000
  Re: Regex substitution trouble TP <wingusr@gmail.com> - 2014-10-28 06:25 -0700
  Re: Regex substitution trouble Tim <jtim.arnold@gmail.com> - 2014-10-28 09:38 -0700
  Re: Regex substitution trouble Cameron Simpson <cs@zip.com.au> - 2014-10-29 13:14 +1100
  Re: Regex substitution trouble Eugene <hexumg@gmail.com> - 2014-11-05 13:44 +0300

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