[python-win32] speed up win32com.client

[DANIEL POSE]

Just for conclude the discusion, the solution is win32.client.CastTo() as
Mark said. However, this modification doesn't speed up the code (at least
in my case).
Then, perhaps I need to learn C++ in order to embed python inside AutoCAD
as Dan Glassman said. But, not now...
Here I post the code using CastTo:

<code>

import win32com.client

import time

import string

import random


 def nombrealeatorio(size=10, chars=string.ascii_uppercase + string.digits):

'''Esta función crea un nombre aleatorio de 10 caracteres'''

return ''.join(random.choice(chars) for x in range(size))

 t1=time.clock()


acad= win32com.client.gencache.EnsureDispatch("AutoCAD.Application")

doc=win32com.client.CastTo(acad,"IAcadApplication")

doc = acad.ActiveDocument

seleccion=win32com.client.CastTo(doc,"IAcadSelectionSets")

seleccion=doc.SelectionSets.Add(nombrealeatorio())

seleccion=win32com.client.CastTo(seleccion,"IAcadSelectionSet")

seleccion.SelectOnScreen()


t2=time.clock()

M=[]

for objeto in seleccion:

objeto=win32com.client.CastTo(objeto, "IAcadBlockReference")

if objeto.ObjectName=='AcDbBlockReference':

M.append(objeto.InsertionPoint)

t3=time.clock()

print 'M_dimension=',len(M)

R=[]

for m in M:

for x in M:

R.append(max(m)+max(x))

print 'R_dimension=',len(R)

t4=time.clock()

t_block1=t2-t1

t_block2=t3-t2

t_block3=t4-t3

print 't_block1=',t_block1

print 't_block2=',t_block2

print 't_block3=',t_block3

print 't_total=',t4-t1


</code>


timing using early-binding:

M_dimension= 512

R_dimension= 262144

t_block1= 3.46952811042

t_block2= 4.81084020455

t_block3= 0.49030086226

t_total= 8.77066917723


timing using late-binding:

M_dimension= 512

R_dimension= 262144

t_block1= 3.20033803179

t_block2= 4.96431445896

t_block3= 0.570101227949

t_total= 8.7347537187


Thank you for this wonderfull mailing list and pywin32.


2012/5/13 Mark Hammond <mhammond at skippinet.com.au>

> On 13/05/2012 5:00 AM, DANIEL POSE wrote:
>
>> I had tried to change attribute name in several ways (InsertionPoint,
>> insertionPoint, insertionpoint,...) but I obtained the same error:
>>
>> Traceback (most recent call last):
>>   File "<ipython console>", line 1, in <module>
>>   File
>> "C:\Python27\lib\site-**packages\spyderlib\widgets\**
>> externalshell\startup.py",
>> line 128, in runfile
>>     execfile(filename, glbs)
>>   File "C:\Documents and Settings\Usuario\Mis
>> documentos\Dropbox\PYTHON\**PruebaAutoCAD.py", line 29, in <module>
>>     M.append(objeto.**insertionpoint)
>>   File "C:\Python27\lib\site-**packages\win32com\client\__**init__.py",
>> line 465, in __getattr__
>>     raise AttributeError("'%s' object has no attribute '%s'" %
>> (repr(self), attr))
>> AttributeError: '<win32com.gen_py.AutoCAD 2008 Type Library.IAcadEntity
>> instance at 0x88940672>' object has no attribute 'insertionpoint'
>>
>
> In the gen_py directory you should find a generated file supporting the
> AutoCAD object - it will have a GUID in its name so it might not be obvious
> which one applies, but inside that you should find the 'IAcadEntity'
> object.  That should have a _prop_map_get attribute which lists the
> attributes available on the object - I'd expect to find insertionPoint
> listed there.  It may turn out it is actually on a different object, in
> which case the win32com.client.CastTo() function might be useful to get the
> appropriate interface.
>
>
>  If I delete only the win32com\client\gen_py  folder It doesn't work. I
>> need delete for example win32com and win32 folders and restore older ones.
>>
>
> Hrm - I certainly can't explain that!  Or maybe I can - check your %TEMP%
> folder and see if there is a gen_py directory there?
>
> Mark
>
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