Open, save and close an excel file from the command prompt without interation

I have an excel file that needs to be automatically modified (with a python script) and also be available for manual modifications. It is an excel file with several sheets, each containing a single table and containing formulas in some columns.
My script opens the excel file with openpyxl, to avoid breaking all the structure that exists inside the tables and automatically modify some rows in some specific sheets. I have to use openpyxl beacuse I need that the excel file can be manually modified the same way, meaning that users can open it, add for instance a new line into a table, which will extend the table and fill the formulas automatically inside excel, normal behavior of tables in excel.

The problem is that, after saving it in python, I need to read it in Tableau Prep, a program for data preparation. This program cannot read my formulas after I save the excel file with openpyxl, It only reads if I manually open the modified excel, save it without any manual modification and close it. I immediatly see that the size of the file changes, meaning that openpyxl save things in a slightly different way than how excel operates, so Excel re-organize things himself.
The thing is that I need this script to do everything automatically, without the need of manually open the file at the end.
So I am trying to search for a way to open an excel file via command prompt, save it and close it. So far, the only thing I found is to try to use a simple VBA macro:

Sub SaveAndCloseWithoutModifications()
    Application.DisplayAlerts = False
    ThisWorkbook.Save
    ThisWorkbook.Close
End Sub

but I do not succeed to make it work from command line, it simply opens the excel and does nothing automatically.
I try:

start excel.exe excelfile.xlsm /mSaveAndCloseWithoutModifications

I am lost here, please help me

I would use vbs for this:

Set app = CreateObject("Excel.Application")
Set wb = app.Workbooks.Open("excelfile.xlsm")
app.Visible = True ' For debugging
wb.Worksheets("Sheet1").Range("A1").Value = 1 ' For debugging enter a unique number
wb.Save
WScript.Echo "Press OK to quit Excel" ' For debugging
app.Quit

If you have not used vbs before, just create a plain text file, name it as "something.vbs", and put the above code in it. From cmd it can be started either as something.vbs or as WScript something.vbs

Thanks for your comments. I didn't try you vbs approach, but thanks @z32a7ul.
I managed to solve the problem by doing the following:
My xlsm file has a module with the code:

Sub SaveAndCloseWithoutModifications()
    Application.DisplayAlerts = False
    ThisWorkbook.Save
End Sub

Then, in python, after having modified and saved the file with openpyxl, I do:

import win32com.client as win32
excel = win32.Dispatch('Excel.Application')
workbook = excel.Workbooks.Open(filepath)
excel.Run('SaveAndCloseWithoutModifications')
excel.Quit()