Re: [HTCondor-users] example of regexp classad expression syntax

[Brian Bockelman <bbockelm@xxxxxxxxxxx>]

Hi Steve,

That's not a valid regexp, so the function evaluates to Error.

Did you want:

regexp("wnitb.{0,3}\.fnal\.gov", Machine)

?  Probably could tighten up the regexp with:

regexp("wnitb[0-9]{0,3}\.fnal\.gov", Machine)

Brian

PS - here's what I used to test:

>>> import classad
>>> ad = classad.ClassAd({"Machine": "wnitb123.fnal.gov"})
>>> expr = classad.ExprTree('regexp("wnitb.?.?.?\.fnal\.gov", Machine)')
>>> expr.eval(ad)
True
>>> expr = classad.ExprTree('regexp("wnitb???\.fnal\.gov", Machine)')
>>> expr.eval(ad)
classad.Value.Error

On Jul 28, 2014, at 1:37 PM, Steven Timm <timm@xxxxxxxx> wrote:

> 
> I am trying to create a classad expression which is TRUE
> when the Machine name matches wnitb???.fnal.gov
> and FALSE otherwise.
> 
> I thought
> regexp("wnitb???.fnal.gov",Machine)
> should do that--but in fact I can not construct any regexp
> that is turning out to be true.  What am I missing?
> Manual isn't much help on this.
> 
> Steve Timm
> 
> 
> ------------------------------------------------------------------
> Steven C. Timm, Ph.D  (630) 840-8525
> timm@xxxxxxxx  http://home.fnal.gov/~timm/
> Fermilab Scientific Computing Division, Scientific Computing Services Quad.
> Grid and Cloud Services Dept., Associate Dept. Head for Cloud Computing
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