How do I convert a text file to a.CSV file

And also, I've had people asking for CSV files, when they meant TAB-delimited. So make sure you have the requirements of the assignment correct before doing unnecessary work.

@altenbach wrote: Using a comma as column delimiter could get problematic if you share it with someone in a location where the decimal delimiter is also a comma. It could also be a problem if you actually need a comma in a string value. I'm with Altenbach. If all you need is something that can easily be opened by Excel, a tab delimited text file works just fine. I do it all the time.

All you need to do is read it as a string, replace all tabs with commas, then save it again. Of course excel has no problem also reading tab delimited files directly. I still don't see the purpose of all this. Using a comma as column delimiter could get problematic if you share it with someone in a location where the decimal delimiter is also a comma.