Re: [Pyparsing] parsing with operatorPrecedence takes too much time

[Joshua J. K. <jk...@sk...>]

On Wed, 2008-04-02 at 18:33 +0200, Ralf Schmitt wrote:
> Hi all,
> 
> I'm attaching a short test program that tries to parse mathematical
> expressions using operatorPrecedence.
> It takes nearly one second to parse a simple expression like 1+1+1-(5+2) (on
> a 2.4Ghz machine).

You forgot to attach it. :)

When you say "takes nearly one second" do you mean for the python script
to start up, initialize, parse, and exit?  Or one second just for
parsing?  Have you tried *just* the parsing routine under something like
timeit?

Check my code against the timeit docs, but something like this:

t = timeit("parse_exp.parseString('1+1+1-(5+2)')",
    setup='from __main__ import parse_exp)

print t.timeit()

That should give you an idea of how long it's actually taking.

j

-- 
Joshua Kugler
VOC/SigNet Provider (aka Web App Programmer)
S&K Aerospace Alaska
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