CSV Files

Text file should be preferred over binary files because-– Can be read by user– Less likely to be corrupted– Edited by many programs– More organized and valid data

Binary formIn binary files data is stored in raw i.e. binary form , no delimiter is needed and translation of data is not required. Hence binary files are faster and easier for program to read and write than text files. Text formIn text file data is stored in Unicode or ASCII that can be read

Mode determines the type of operation (such as reading data from file, writing data from file, closing file )to be done on data file. It tells how the data file will be used after opening it. File Mode Description Purpose “r” Read only Open file in read only mode. “w” Write only Existing data of

open() as it name implies used to open a data file in a program through file object and close() is used to close() the link of file object and data file. Once data file is closed, no operation can be performed.

File object also known as file handler is a tool used to read and write data to a file on a disk. All the functions such as reading data from a file, writing data in a file, closing data file etc are performed through file objects.