Re: Python for loops on objects

[Julian Johnson <julian(at)exch.demon.co.uk>]

I get so confused by the conventions for using conventional brackets and 
square brackets when you're switching between Python tuples/lists and 
XSI collections, but in this instance it looks like the problem happens 
when you index into LocalProperties(0) using normal brackets i.e. it 
gives you a badly dispatched object. If you index into 
LocalProperties[0] using square brackets the dispatch seems to be fine 
(here at least). I always thought you needed to index into collections 
using (x), however. Anyway here's a snippet that seems to work this way 
in 5.11/Python 2.4 without the PyWin hack....

import win32com
c = win32com.client.constants
xsi = Application

oClusters = xsi.Selection(0).ActivePrimitive.Geometry.Clusters

for oCls in oClusters:
   if ( oCls.type == c.siSampledPointCluster ):
       oCluster = oCls
       break

#just to check the element array is really there
for x in oCluster.LocalProperties:
   print x
   print ClassName(x)
   print x.Elements.Array

#the acid test with square brackets  
oUVspace = oCluster.LocalProperties[0]
aElements = oUVspace.Elements.Array
print ClassName(oUVspace)
print aElements

Julian
......................................................................................... 

Men-From-Mars, Ealing, London
Scripts: http://www.exch.demon.co.uk/jj_xsiscripts.htm 




kim aldis wrote:
> Hmm, works here too. Digging deeper.
>
>   
> > -----Original Message-----
> > From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On
> > Behalf Of Francois Lord
> > Sent: 13 April 2007 19:33
> > To: XSI(at)Softimage.COM
> > Subject: Re: Python for loops on objects
> >
> > Yes. I have Active Python 2.4 with the hack and your script (and Kim's)
> > works fine in 6.01.
> >
> > Bernard Lebel wrote:
> >     
> > > Indeed. Before 6.0, that used to be a typical dispatch problem that
> > > required the pywin32 hack or forced dynamic dispatching to work.
> > >
> > > This works perfectly for me in 5.11:
> > >
> > > import win32com
> > > c = win32com.client.constants
> > > xsi = Application
> > >
> > > oClusters = xsi.selection(0).activeprimitive.geometry.clusters
> > >
> > > for oCls in oClusters:
> > >     if ( oCls.type == c.siSampledPointCluster ):
> > >         oCluster = oCls
> > >         break
> > >
> > > t = oCls.Elements
> > > xsi.logmessage( t.count )
> > > xsi.logmessage( xsi.classname( t ) )
> > > xsi.logmessage( str( t.array ) )
> > >
> > >
> > >
> > > I wonder if hacking pywin32, even if used in 6.0, would fix this.
> > >
> > >
> > > Cheers
> > > Bernard
> > >
> > >
> > >
> > > On 4/13/07, Kim Aldis <XSI(at)kim-aldis.co.uk> wrote:
> > >       
> > > > It's misleading. Putting a logmessage of oCls in the loop prints a
> > > > sensible
> > > > name. it's only when you try and access any properties that it kicks
> > > >         
> > you
> >     
> > > > out. If you haven't checked it thoroughly you may want to.
> > > >
> > > >         
> > > > > -----Original Message-----
> > > > > From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On
> > > > > Behalf Of Bernard Lebel
> > > > > Sent: 13 April 2007 15:16
> > > > > To: XSI(at)Softimage.COM
> > > > > Subject: Re: Python for loops on objects
> > > > >
> > > > > No problem at all here.
> > > > > Note that I'm using XSI 5.11, so my pywin32 is hacked......
> > > > >
> > > > > Cheers
> > > > > Bernard
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > On 4/13/07, Kim Aldis <XSI(at)kim-aldis.co.uk> wrote:
> > > > >           
> > > > > > Has anyone noticed this seems to give you an object in oCls but
> > > > > >             
> > you
> >     
> > > > > can't
> > > > >           
> > > > > > actually get any of its properties :-
> > > > > >
> > > > > > for oCls in oClusters :
> > > > > >         if ( oCls.type == constants.siSampledPointCluster ):
> > > > > >                 oCluster = oCls
> > > > > >                 break
> > > > > >
> > > > > > t = oCls.Elements # ERROR!
> > > > > >
> > > > > >
> > > > > > But this works just fine:-
> > > > > >
> > > > > > for i in range( oClusters.count ) :
> > > > > >         oCls = oClusters(i)
> > > > > >         if ( oCls.type == constants.siSampledPointCluster ):
> > > > > >                 oCluster = oCls
> > > > > >                 break
> > > > > >
> > > > > > t = oCls.Elements # Works
> > > > > >
> > > > > > www.kim-aldis.co.uk   |   kim(at)kim-aldis.co.uk
> > > > > >
> > > > > >
> > > > > >
> > > > > > ---
> > > > > > Unsubscribe? Mail Majordomo(at)Softimage.COM with the following
> > > > > >             
> > text in
> >     
> > > > > body:
> > > > >           
> > > > > > unsubscribe xsi
> > > > > >
> > > > > >             
> > > > > ---
> > > > > Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text
> > > > >           
> > in
> >     
> > > > > body:
> > > > > unsubscribe xsi
> > > > >           
> > > > ---
> > > > Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in
> > > > body:
> > > > unsubscribe xsi
> > > >
> > > >         
> > > ---
> > > Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in
> > > body:
> > > unsubscribe xsi
> > >
> > >       
> > ---
> > Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in
> > body:
> > unsubscribe xsi
> >     
>
> ---
> Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:
> unsubscribe xsi
>
>   

---
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:
unsubscribe xsi