Opening, Reading and Writing Binary

University:
California State University, Chico
Course:
CSED 590 | Software Design, Data Structures, and Algorithms
Academic year:

2024
Views:

0

Pages:

4
Author:

Sanchit Kumar

Python programming Opening, Reading and Writing Binary Files Binary files refer to any file that contains non-text, such as image or video files. To work with binary files, we simply use the ‘rb’ or ‘wb’ mode. Copy a jpeg file onto your desktop and rename it myimage.jpg. Now edit the program above by changing the first two line lines inputFile = open (‘myfile.txt’ , 'r') outputFile = open (‘myoutputfile.txt’ , 'w') to inputFile = open (‘myimage.jpg’ , 'rb') outputFile = open (‘myoutputimage.jpg’ , 'wb') Make sure you also change the statement outputFile.write(msg + '\n') back to outputFile.write(msg). Run the new program. You should have an additional image file named myoutputimage.jpg on your desktop. When you open the image file, it should look exactly like myimage.jpg. Deleting and Renaming Files Two other useful functions we need to learn when working with files are the remove() and rename() functions. These functions are available in the os module and have to be imported before we can use them. The remove() function deletes a file. The syntax is remove(filename). For instance, to delete myfile.txt, we write remove(‘myfile.txt’). The rename() function renames a file. The syntax is rename (old name, new name). To rename oldfile.txt to newfile.txt, we write rename(‘oldfile.txt’ , ‘newfile.txt’).

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