CSE 1010 Lecture Notes - Lecture 25: Mkdir, Newline, Empty String

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27 Apr 2018

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WEEK 15 - LECTURE 25 - FILES

● A file is a collection of data or information that is stored in secondary device.

○ We usually use files for storing data which can be processed by our program.

○ Files are used to store data permanently.

○ There are two types of files:

■ text files (contain ASCII)

■ binary files (contain non-ASCII, audio, video, photo)

● Python provides basic functions and methods necessary to manipulate files by default.

○ Before you can read or write a file, you have to open a file using Python's built-in

open() function.

○ open() returns a file object, and is most commonly used with two arguments:

filename and mode

■ fileobject = open(filename, mode)

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