A CSV file is a “comma-separated values” file. In plain English, this is a text file that contains an unusually large amount of data. More often than not, this is used in order to create databases of ...

The "iterable" argument can be any object that returns a line of input for each iteration, such as a file object or a list. [...] ...

Web apps love exporting CSV files, but they don't always play nice with Excel. Leading zeros disappear, dates break, and text fields merge together. Most people waste time fixing these problems ...