RE: Python regex pattern from array of hex chars

[Joseph L. Casale]

-Original Message-
From: Python-list  On Behalf Of MRAB
Sent: Friday, April 13, 2018 12:05 PM
To: python-list@python.org
Subject: Re: Python regex pattern from array of hex chars

> Use re.escape:
> 
> regex = re.compile('[^{}]+'.format(re.escape(''.join(c for c in
> character_class

Brilliant, thanks!
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Re: Python regex pattern from array of hex chars

[MRAB]

On 2018-04-13 18:28, Joseph L. Casale wrote:

I have an array of hex chars which designate required characters.
and one happens to be \x5C or "\". What foo is required to build the
pattern to exclude all but:

regex = re.compile('[^{}]+'.format(''.join(c for c in character_class)))

I would use that in a re.sub to collapse and replace all but those
in the character_class. Obviously the escape issues break the \x5C
character.


Use re.escape:

regex = re.compile('[^{}]+'.format(re.escape(''.join(c for c in 
character_class

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