I thought I linked to csvkit a while ago, but apparently not. If you deal with CSV data at all, you should know about the utilities suite that helps you format and re-format in various ways. Christopher Groskopf posted a list of quick things you can do with csvkit.
Over the last several months there have been two major releases of csvkit. These releases have brought long-awaited features such as Python 3 support, a csvformat utility and a new csvkit tutorial—not to mention a slew of bug fixes. To celebrate the latest release, here are eleven of my favorite awesome things you can do with csvkit. If you aren’t using it yet, hopefully this will convince you.
Fun things include a quick one-liner to convert an Excel file to CSV, switching to JSON, and easy CSV export from a database.