Urgent need to build gui and coding using c++ and open cv

Fitting a single symmetric peak using python. Import data, Reading numerical values (x, y) from a one text file from a subfolder. Background removal and Fitting and Plotting data and fit, I want to fit a lorentzian peak to the set of data x and y. And I wanted to automate it for each data file. Take one data file after another from the subfolder. can you do it?