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f = open("demofile2.txt", "a") f.write("Now the file has more content!") f.close() #open and read the file after the appending: f = open("demofile2.txt", "r") print(f.read())
C:\Users\My Name>python demo_python_file_append.py
Hello! Welcome to demofile2.txt
This file is for testing purposes.
Good Luck!Now the file has more content!