How To Create Python Formulas For Excel

To truly integrate Excel with Python, we need to go a step further and devise a way to incorporate formulas into our spreadsheets that run using Python. This way we can leverage the power of Python with the flexibility of Excel and along with this add new capabilities to Excel that did not currently exist. In this video, we explore how to incorporate Python formulas into Excel by creating Python objects that we can run using VBA. This will allow us to call the methods that belong to these objects and pass through our arguments to them.

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[deldridg]

Yes and yes!! Thanks to you I'm seeing a whole world of opportunities opening up. This was a great intro and it worked perfectly. Cheers again from Sydney, Aust - Dave

[ballabgarh]

Amazing Video Buddy. Its good to see different value addition than the regular excel courses.

I believe internet is full of learn excel in 5 days, but missing how to implement to achieve something meaning full.
Great presentation, win libraries looks quiet scary, but you talked with such ease that i could replicate in no time. Thank you

[redfeathersa]

It works for me when running from Pycharm Pipenv, but doesnt from my usual pycharm which is my go to for so many months and years. I maye have to re-configure re-integrate my pycharm so it always works, ot just move everything to Pipenv environment instead. (might be better) . Need to do figure out what draw backs o/ limitatations (if any) working from Pipenv has compared to what ive been working on so far, but so far Pipenv is the the only one which works flawlessly. thank you buddy, you may have improved my life/coding by 1000%

[stevesoto]

It is a great video and explanation... thank you so much!!

[ignacioa]

Good stuff, man! Just awesome! I mean just the amount of content on different subject matters and processes is amazing. I can't keep up....got lots more to learn!

If I may request, sigma coding, if you can do series on VBA general files iteration, files manipulation, scraping or looking or pinpointing a specific excel file or other types of files aside from an excel type, etc. at the Excel file or workbook level or file level. I know you've done some good VBA on scraping content from inside an excel sheets, but would like to see other things, again, at the higher folder or file level if that makes sense.
I've seen some others online using an index iteration coding to scrape through all the folders and files, for example, but it just didn't seem right or were not clear. Also, is there another method aside from an index iteration which may only work when all the files are the same doing iteration for all the files in a target folder, for example? What iteration or logic methods would you use to look only, for example, at an excel type file versus pdf type versus another type of file in a targeted folder that may hold different types of files?

[Krasnolesye]

круто! давно искал
большое спасибо!!!

[Flatunello]

I used to write DLLs in Fortran for engineering spreadsheets in Excel. I owned an engineering firm in San Diego and still consult as a structural engineer. Now that I have learned Python, I want to start this again. Do you have any good references for the differences between the two forms besides the INPROC/LOCAL dichotomy? Are there differences with registering? When I used DLLs, I could register them as add-ins. Is this path still available with INPROC EXE Add-ins providing public functions as you have provided?

[BenCrews]

Thank you so much for this series! Could you do a video on handling events from Excel? If you have a very large spreadsheet, calculating can take a while. If you want to update multiple large spreadsheets in a batch, you can utilize an Event that Excel fires after calculating. I don't really know how to implement this, though...

[eduarddekhovich]

thank you. Would be interesting to see video of using Excel as front-end and python and MySQL.

[julianopappalardo]

Just a comment, it might be convenient to set the variables in VBA as Double, instead of Long, depending on the application. In my case I am implementing a Simplex algorithm interface! Thanks for the code!

[muhammadoladipo]

Thanks for the video. However, when I did exactly the same thing as you did, I kept getting Value error message in Excel. The only difference what we did is the platform I used to run the python code; I used Jupyter notebook. Could this be the reason for the error?
Thanks as you assist in this regard.

[gmiami]

Can the functions be used by anyone who uses Excel, or do they also need to Install Python?

[lokmenmessaoudi]

First Thank you for the tutorial !
I've been trying to write some functions using scipy.stats package but it seems like I'm missing something. Do you please know what could be the issue ?

[floriandelansorne]

Hi, thank you very much for the series! When I do it without the numpy part it works. However as soon as I try to import numpy I get a message error "Error: registration failed (exit code 1). Import numy as np.... ImportError: DLL load failed: The specified module could not be found " which I found strange as I have other scripts that use numpy that work fine

[davidpasquale]

Hi, how can I return an np.array from python to excel like in your example?

[tapepe]

Hi sir, what should I do if my class has parent class which it need to call upon?

[redfeathersa]

Nice !!! I think VBA defaults undeclared variables as variant, so maybe your can tweek your code to handle varients. ModuleNotFoundError: No module named '_win32com' even though they are installed comformed by CMD Requirement already satisfied: pypiwin32 in (223) (& not getting underlined errors in my scratch file). really want to play with this !!! :)

[jonwisniewski]

This is so cool. Thanks for making these videos. In my python function, I am trying to call an API, get a list object back, convert to string, grab a substring, then return the substring. I keep getting #VALUE. I am defining all my data types correctly far as I can tell. Any ideas?


Python code:

def UPCbyASIN(self, x):

accesskey = 'omitted'
api = keepa.Keepa(accesskey)

# Single ASIN query
products = api.query(x) # returns list of product data
conversion = str(products)
#convert to string
conversion = str(conversion)
#convert to string again just to be sure (same result with or without this)
upcstart = conversion.index("upcList")
#this substring definitely exists within the string, I printed to check
conversion = #I grab the right info here when I print it
return conversion

VBA code:

Function UPCbyASIN(x As String)
UPCbyASIN =
End Function

[MercuryAX]

How do you pass a list or numpy array from Python to VBA in this implementation?

[davidpasquale]

HI, is it possible to return a list or an array?