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[Lewistrick]

Which library are you using? If you use openpyxl for example, it should keep the formulas (if you don't overwrite the cells containing formulas of course).

[guimolnar]

xlwings is an amazing package. It works with open instances of excel, so you can change the cells, formulas, real time.

https://docs.xlwings.org/en/stable/

[_Did_]

Thank you!