Python
# Program to append text to a file
filename = input("Enter filename to append to: ")
text = input("Enter text to append: ")
with open(filename, "a", encoding="utf-8") as f:
f.write("\n" + text)
print("Text appended to", filename)Output
Enter filename to append to: notes.txt Enter text to append: Another line Text appended to notes.txt
Opening the file in "a" mode moves the file pointer to the end and preserves previous content.