[python-win32] speed up win32com.client

[DANIEL POSE]

I have read about Early Binding but I hadn't tested the line that you
reference:
acad= win32com.client.gencache.EnsureDispatch("AutoCAD.Application")

For my surprise, if I replace line:

acad= win32com.client.Dispatch("AutoCAD.Application")

for the line:

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

I have an error about a missing attribute in the line:

M.append(objeto.InsertionPoint)

The problem here is that if now I go back to use the line:

acad= win32com.client.Dispatch("AutoCAD.Application")

Now pywin32 brokes and I have always the same error in line:
M.append(objeto.InsertionPoint)

I need to reinstall pywin32 in order to repair the problem.



2012/5/8 Tim Roberts <timr at probo.com>

> DANIEL POSE wrote:
> > Hello,
> >
> > I am writing code to program AutoCAD access from Python using pywin32.
> > When I need to work with a high number of AutoCAD objects, it is
> > faster to use vba than python.
> > Are there some way to speed up python code in order to work faster
> > with AutoCAD elements?
> > For example in the next code when I work with 512 AutoCAD blocks:
> > ...
> >
> > The output for the code is the following:
> >
> > M_dimension= 512
> > R_dimension= 262144
> > t_block1= 4.25343304805
> > t_block2= 3.88635510938
> > t_block3= 0.487477319045
> >
> >
> > Then it is faster to work with R than M, even though R is bigger.
> >
>
> I hope that's not a surprise to you.  The first loop (block2) involves
> two calls into the AutoCAD COM object in each iteration.  The second
> loop (block3) is simply manipulating lists of integers, entirely within
> Python.
>
> > Some suggestions for speed up pywin32 code in this example?
> >
>
> There isn't really anything here to speed up.  You're just "glue".  The
> work is being done in AutoCAD.  It is almost impossible for me to
> believe that Visual Basic does this same loop any faster.
>
> However, you can certainly try switching to early binding by using:
>    acad= win32com.client.gencache.EnsureDispatch("AutoCAD.Application")
>
> --
> Tim Roberts, timr at probo.com
> Providenza & Boekelheide, Inc.
>
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> python-win32 at python.org
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