string.join is abysmally slow

[Graham Guttocks]

Pekka Pessi <Pekka.Pessi at nokia.com> wrote: 
 
>         If "|".join is slow, use it sparingly?  The real problem 
>         seems to be that you are recreating the regexp about 238 
>         times or more, and then throwing the result away.  Create 
>         the regexp once after the loop has completed. 
 
Right.  I don't know why I didn't notice this.  Thanks.  After moving 
the string.join and re.compile outside the for loop, the same function 
now processes 10,000 lines in under 15 seconds.  Just a slight 
improvement.  :-) 
 
Cheers, 
Graham

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