I am working on a project, dealing with excel sheets. My excel consists of formulated data. I want to read the value of the cells, consisting of formulated data, to a text file. I have been using openpyxl in python 3.6 yet. I tried with :
wb = openpyxl.load_workbook(‘excel3.xlsx’, data_only=True)
it’s returning None . 
Kindly help with possible solutions.