Automate Excel with Python: From manual grind to one-click workflow
Comments
Havoc
khurs
Most corporates, last I knew, didn't use Python outside of IT. Devs outside of IT would be using VBA.
However in Financial companies, Python and Excel have always been used together by devs and also quants.
And they tend to use Anaconda, and also like all their other package managers, they would host an in-house package repository and block the public one. That way only approved packages are used, and they only update packages as needed.
Many though have a policy of minimising Excel and rolling out formal platforms whether in-house or off the shelf, as Excel is regarded as a ongoing risk of in-accuracy as full editable at all times, lack of git/version control and so on.
evanjrowley
>Many though have a policy of minimising Excel and rolling out formal platforms whether in-house or off the shelf, as Excel is regarded as a ongoing risk of in-accuracy as full editable at all times, lack of git/version control and so on.
Can confirm this practice in place at fortune 50 financial institutions. One in particular calls it "End-User Computing System Risk", meaning the end user created a business-critical "system" (i.e., a complex Excel file or Access database) on their own computer.
iugtmkbdfil834
This. The amount of begging and pleading I had to do to get basic python access was insane ( long story, but boss did not believe in it ). In some organizations, things change slowly and even if I could work around some of those restrictions, doing so does not really do me any favors.
rantingdemon
This is just an advertisement for a book. And a terrible advertisement. No sample chapters to evaluate the book.
pbronez
Yes it’s an add for a book but it does provide a sample chapter:
https://nostarch.com/download/samples/automate-excel-with-py...
jenkinstrigger
Yeah, a $50 book (physical) or $40 ebook
merlyn
With normal inflation, a $30 O'Reilly book in the year 2000 would be about $58 today.
iugtmkbdfil834
We all have to start somewhere. It does not invalidate your point that it is an advert, but I can't categorically state it is terrible.
delis-thumbs-7e
Looking at the content, if you are familiar at all with Python and basic programming, this provides very little new. I sometimes have to stuff massive Excel-abominations with 50k+ rows and rip data I need out of them with Pandas, but it only requires reading Pandas documentation (which is very good) a bit.
But perhaps this might be good if you know no programming and want to make your life easier.
janlaureys
Been working on a dashboard that takes in a bunch of different public data sources in different formats and pandas has truly been a godsend for this.
I've got csv, txt, xlsx in all different shapes and sizes and with just a few settings I can go through them quite easily and very fast as well.
OGWhales
Depending on the size and the transformations you are doing, polars is worth checking out. Syntax is a bit different from pandas but the performance is really nice.
janlaureys
My biggest bottleneck right now is upload speed but I'll keep it in mind thanks.
fomoz
[dead]
tmaly
I am guessing from the TOC that they are using pandas. My team quickly ran into memory spikes when multiple programs using pandas would run. We have since migrated to using ibis with a duckdb backend to smooth out the memory spikes.
snickmy
in a world of ai agents, python is just an implementation detail that you don't need to know, between you and your data/business task
0xbadcafebee
Yesterday I asked an AI to generate a report as a CSV. But then I wanted it split into multiple sheets, and to add some formulas, so I asked it to create an XLSX, and it did (with Python). I'm imagining Microsoft embedding an AI agent and Python interpreter in their tools... no more need for a software dev, excel expert, or technical book author
rrgok
I prefer DuckDB
tokai
How do you automate Excel with a RDBMS?
psd1
DuckDB isn't an rdbms, bit the answer is the same: ODBC or OLAP. There's a "data connection wizard".
fomoz
[dead]
pbronez
What are best practices for using Excel as a front end for python tooling? I’ve got a use case where the business users are maintaining a complex spreadsheet and we need to hook some genuine optimization into it. It’s all fine and good if you assume the people will use the template perfectly, but hahahahahaha
There’s probably some ideal blend of locking regions, in-excel validation, in-python validation, and clean separation of human inputs and machine outputs. Has anyone figured out what that is already?
cm2187
Terrible title. Nothing to do with automating excel. From what I can tell it seems to be about ingesting spreadsheets into panda (and incredibly narrow use of Excel) and working outside of Excel.
ebeirne
its just a really badly written ad
haddr
Many negative comments here stem from readers applying some specific corporate contexts and dismissing the book's use cases. That misses the point. This book isn't an advanced automation manual for 2026. It’s an excellent book for beginners who want to learn how to automate some tedious work.
My_Name
"Stop wasting your time on Excel and waste even more coding an Excel parser in Python!"
fomoz
[dead]
Elad-Rez
[flagged]
bluecomputing
[dead]
These sort of things always seem to assume a fairly relaxed software environment.
In practice I’ve found the big corporates try hard to keep their excel files with financial data and their Python environments with pip & all those associated risks far apart. That’s if pip works at all & isn’t caught by a firewall