A CSV file (Comma Separated Value) is a data file where the contents are highly structured.
Each of the data items are separated by commas, and the line ends with a new line character (This can't normally be seen as it's a non printing character).
They look like this:
Click here to download a sample CSV file
|Read CSV data||Read data from a CSV file|
|CSV File read and append||Read and append to a CSV file using a loop to control the file append|
|CSV File read and write||Read and write a CSV file using the methods from the CSV module|
|File exists||Use the file system to see if a file exists|