It depends on the context. If you're pulling in data from a source whose format the user can't control, then you have to deal with the broken CSV emitter. But

It depends on the context. If you're pulling in data from a source whose format the user can't control, then you have to deal with the broken CSV emitter. But if you're pulling in data from Excel, you're better off telling the user to save as xlsx because Excel makes such a hash of CSVs. In Python, I've had way fewer problems using xlrd and openpyxl than I have with any of the ways you can read CSVs.