f.writelines(["\nSee you soon!", "\nOver and out."])
f.close()
#open and read the file after the appending:
f=open("demofile3.txt", "r")
print(f.read())
C:\Users\My Name>python demo_python_ref_file_writelines_2.py Hello! Welcome to demofile2.txt
This file is for testing purposes.
Good Luck!
See you soon!
Over and out.