What is built-in method sub

Grant Edwards invalid at invalid.invalid
Mon Jan 11 22:01:04 CET 2010

On 2010-01-11, Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> wrote:

[regarding profiling results]

> I think you'll find that Python's regex engine is pretty much
> optimised as well as it can be, short of a major re-write. But
> to quote Jamie Zawinski:
>     Some people, when confronted with a problem, think "I know, 
>     I'll use regular expressions." Now they have two problems.
> The best way to optimize regexes is to use them only when
> necessary. They are inherently an expensive operation, a
> mini-programming language of it's own. Naturally some regexes
> are more expensive than others: some can be *really*
> expensive, some are not.

And for all pracitacal purposes, you can't tell which is which.
At least not for any value of "you" I've run into...

Grant Edwards                   grante             Yow! I'm in direct contact
                                  at               with many advanced fun
                               visi.com            CONCEPTS.

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