One minute data for bank nifty options

I want to backtest some of my strategies. I need one minute data for the bank nifty options. (Now bank nifty has weekly options and i need the data only for these weekly options). can you suggest me the best way to get the one minute data for bank nifty options? Since am not exposed to any of the testing tools, i would like to test it with my own scripts in python. so i will need the one minute data in text format. can i get this exported from zerodha?

hello trader,

The pi charts support historical data export to excel file format only.

Excel files can be converted into text files and vice versa.
Read here: https://support.office.com/en-us/article/Import-or-export-text-txt-or-csv-files-5250ac4c-663c-47ce-937b-339e391393ba