How to sub with matched groups and variables in Python

Posted by Syed on Stack Overflow See other posts from Stack Overflow or by Syed
Published on 2011-03-16T21:26:00Z Indexed on 2011/03/17 0:10 UTC
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regex

Hi, new to python. This is probably simple but I haven't found an answer.

rndStr = "20101215"
rndStr2 = "20101216"
str = "Looking at dates between 20110316 and 20110317"
outstr = re.sub("(.+)([0-9]{8})(.+)([0-9]{8})",r'\1'+rndStr+r'\2'+rndStr2,str)

The output I'm looking for is:

Looking at dates between 20101215 and 20101216

But instead I get:

P101215101216

The values of the two rndStr's doesn't really matter. Assume its random or taken from user input (I put static vals here to keep it simple). Thanks for any help.

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