f = open("demofile2.txt", "a") f.write("\nSee you soon!") f.close() #open and read the file after the appending: f = open("demofile2.txt", "r") print(f.read())
C:\Users\My Name>python demo_file_write2.py
Hello! Welcome to demofile2.txt
This file is for testing purposes.
See you soon!