I looked at the previous threads regarding this topic, but they have not helped solve the problem.
how to read password protected excel in python
Openpyxl Package works if you are using linux system. You can use secure the file by setting up a password and open the file using the same password.
For more info: https://www.quora.com/How-do-I-open-read-password-protected-xls-or-xlsx-Excel-file-using-python-in-Linux