You can check that file with: less clients.csv You should see a perfectly-formatted CSV file, ready to be uploaded (Figure A). Figure A Our CSV file, exported from xlsx, using in2csv.

Remember that a CSV file is actually just a text document with a fancy formatting. That means that you actually don’t need to use a module if you want to know how to open CSV files in Python!

What makes a CSV file unique is the way its content is organized. Here's what you need to know about CSV files and how to use them.