When I downloaded install python by default it installed 32bit version
only so pywin32 also I installed 32bit only
Quicopc library is installed
On Tue, 8 Sep 2020, 22:15 Tim Roberts, <t...@probo.com> wrote:
> Shaik Saleem Basha wrote:
> >
> > Hi,
> >
> > I’m using python 3.8.5 32 bit and also I have installed pywin32 by
> > this command pip install pywin32 but when I execute my coed i’m
> > getting the following error pywintypes.com_error: (-2147221005,
> > 'Invalid class string', None, None)
> >
> > My code :
> >
> > import win32com.client
> >
> >
> client = win32com.client.Dispatch('OpcLabs.EasyOpc.DataAccess.EasyDAClient')
> >
> > value = client.ReadItemValue('','OPCLabs.KitServer.2', 'Demo.Single')
> >
> > print('value:',value)
> >
> The most obvious question, of course, is do you actually have the
> QuickOPC .NET library installed?
>
> Why did you choose the 32-bit Python, instead of the 64-bit Python?
>
> --
> Tim Roberts, t...@probo.com
> Providenza & Boekelheide, Inc.
>
>
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