Delete all characters in a multline string upto a given pattern

Posted by biffabacon on Stack Overflow See other posts from Stack Overflow or by biffabacon
Published on 2010-04-17T10:54:50Z Indexed on 2010/04/17 11:03 UTC
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Using Python I need to delete all charaters in a multiline string up to the first occurrence of a given pattern. In Perl this can be done using regular expressions with something like:

#remove all chars up to first occurrence of cat or dog or rat
$pattern = 'cat|dog|rat' 
$pagetext =~ s/(.*)($pattern)/$2/xms; 

What's the best way to do it in Python?

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