What's the advantage of using this over OpenCSV? Or over using open("spreadsheet.xslx",'r').readline().split("\t") to shove everything into a Python dictionary?

What's the advantage of using this over OpenCSV? Or over using open("spreadsheet.xslx",'r').readline().split("\t") to shove everything into a Python dictionary? Right now, as a side project, I am using bulk data from the Federal Election Commission to find correlations between the number of campaign donations of a given amount and the number of voters that vote for that campaign's political candidate. I had never even heard of OpenCSV when I started, but I have been doing quite well with Python's basic functions.