How To Not Write Extra Lines In Csv Python . Three lines of code, and only one of them is doing the actual work. The writelines () method writes the items of a list to the file. Python Export Data to CSV File — Calista Tee from calistatee.com Reading the csv into a pandas dataframe is quick and straightforward: Csv.writer class provides two methods for writing to csv. Move the file pointer to the start of a file using seek () method.