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Editorial Team
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Asked: 2026-05-16T11:57:06+00:00

How Do control with python multiple instances of Excel. This is not read/write, but

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How Do control with python multiple instances of Excel. This is not read/write, but more running macros on different workbooks.

Ex:
Excel.exe running Book1.xls. has mac1
Excel.exe running Book2.xls. has mac2.

I got one instance to work, this first instance, which use 2003.
I could not figure out the other instance which is 2007.

If 2 can be done, can 3 or 4, Or is the a limit.
I thought of memcache launching the different instances, but really not sure, if workable.

TIA

working on apply this:
Using Python to program MS Office macros?

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1 Answer

  1. Editorial Team

    Unfortunately you cannot control which instance you get back when grabbing things from the ROT (running object table.) Only the first instance of an application will register itself.

    http://support.microsoft.com/kb/238975

    However, each document is registered in the ROT so in your case you may be able to find the right instance by looking for documents.

    -Oisin

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