filePath: Local file path to write the CSV file to. If not specified, the CSV will be returned as a string. Only needed in Nodejs version
fileName: The name of the file to download as. Only needed in browser environment.
download: Boolean indicating whether to automatically download the CSV file in the browser. Only needed in the browser environment.
header: Boolean indicating whether to include a header row in the CSV file.
sep: Character to be used as a separator in the CSV file.
The to_csv function can be used to write out a DataFrame or Series to CSV file. The output is configurable and will depend on the environment. In the following examples, we show you how to write/download a CSV file from Node and Browser environments.