File I/O

file = open("example.txt", "r")
content = file.read()
print(content)
file.close()

file = open("example.txt", "w")
file.write("Hello, world!")
file.close()

file = open("example.txt", "a")
file.write("\nThis is a new line.")
file.close()

with open("example.txt", "r") as file:
    content = file.read()
    print(content)