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From: Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de>
Subject: Re: what would be the regular expression for null byte present in a string
Date: Wed, 14 Jan 2015 15:35:40 +0100
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On 01/13/2015 02:40 PM, Shambhu Rajak wrote:
> I have a string that I get as an output of a command as:
>
> '\x01\x00\x00\x00\x00\x00\x00\x00\x0c\x00\x00\x00*10232ae8944a*\x02\x00\x00\x00\x00\x00\x00\x00\n'
>
> I want to fetch ‘*10232ae8944a*’ from the above string.
>
> I want to find a re pattern that could replace all the \x01..\x0z to be
> replace by empty string ‘’,  so that I can get the desired portion of string
>
> Can anyone help me with a working regex for it.
>
> Thanks,
>
> Shambhu
>

If the characters you need to keep always form a contiguous stretch, you 
can also use:

exclude = ''.join(chr(n) for n in range(32))
s_in.strip(exclude)

Wolfgang