Accessing enumaration constants in Excel COM using Python and win32com

calendar_today Asked Jan 30, 2014
thumb_up 9 upvotes
history Updated April 14, 2026

Direct Answer

I'm new to win32com, so I don't know if this helps… try to start Excel with: xlApp = win32com.client.gencache.EnsureDispatch("Excel.Application") This should run makepy, and you…. This is a prose walkthrough, ranked #226th of 303 by community upvote score, from 2014.


The Problem (Q-score 4, ranked #226th of 303 in the Excel VBA archive)

The scenario as originally posted in 2014

I’m using python 2.7 win32com module to load an MS Excel worksheet from Python:

    book = xlApp.Workbooks.Open("myFile.xls")
    sheet = book.Sheets(1)

Many methods and properties of Range, Worksheet etc use enumerations like XlDirection, XlFillWith, and so forth. These define constants such as xlDown, xlUp, xlFillWithContents, etc. Are those constants available from win32com so that I could do, for example:

    column = outputsSheet.Range("I5:I150")
    lastRow = column.End(xlInterop.xlDown)
    print "Last row:", lastRow.Row

This doesn’t work because xlInterop is not defined, is there a way to access it using win32com? Discovering the values of such constants as xlDown by trial and error is not very practical.

Why community consensus is tight on this one

Across 303 Excel VBA entries in the archive, the accepted answer here holds niche answer (below median) status — meaning voters are unusually aligned on the right fix.


The Verified Solution — niche answer (below median) (+9)

Verbal answer — walkthrough without a code block

Note: the verified answer is a prose walkthrough. If you need a runnable sample, check Excel VBA entries ranked in the top 10 of the same archive.

I’m new to win32com, so I don’t know if this helps… try to start Excel with:

xlApp = win32com.client.gencache.EnsureDispatch("Excel.Application")

This should run makepy, and you can find some resulting Python files in …Libsite-packageswin32comgen_py0020813-0000-0000-C000-000000000046x0x1x7 (last folder might be another name for you, I dont know). Check the init.py file, there’s a bunch of constants defined there.

Edit: you can access these constants with:

from win32com.client import constants as c


When to Use It — classic (2013–2016)

Ranked #226th in its category — specialized fit

This pattern sits in the 97% tail relative to the top answer. Reach for it when your scenario closely matches the question title; otherwise browse the Excel VBA archive for a higher-consensus alternative.

What changed between 2014 and 2026

The answer is 12 years old. The Excel VBA object model has been stable across Office 2013, 2016, 2019, 2021, 365, and 2024/2026 LTSC, so the pattern still compiles. Changes that might affect you: 64-bit API declarations (use PtrSafe), blocked macros in downloaded files (Mark-of-the-Web), and the shift toward Office Scripts for web-first workflows.

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Frequently Asked Questions

This is a below-median answer — when does it still fit?
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Answer score +9 vs the Excel VBA archive median ~4; this entry is niche. The score plus 4 supporting upvotes on the question itself (+4) means the asker and 8 subsequent voters all validated the approach.

The answer has no code block — how do I turn it into a snippet?
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Use the walkthrough above as a checklist, then open a top-10 Excel VBA archive entry for a concrete starting template you can adapt.

Published around 2014 — what’s changed since?
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Published 2014, which is 12 year(s) before today’s Office 2026 build. The Excel VBA object model has had no breaking changes in that window. Three things to re-test: (1) blocked macros on downloaded files (Mark-of-the-Web), (2) 64-bit API declarations (PtrSafe, LongPtr), (3) any shift toward Office Scripts for web scenarios.

Which Excel VBA pattern ranks just above this one at #225?
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The pattern one rank above is “Bloomberg BHD function with ISIN”. If your use case overlaps, compare both before committing.

Data source: Community-verified Q&A snapshot. Q-score 4, Answer-score 9, original post 2014, ranked #226th of 303 in the Excel VBA archive. Last regenerated April 14, 2026.