Task: Using the comment as a guide, replace the "TODO" comment in the code with the proper code.
input: def greet_to(name):
    """Print a greeting to the name provided."""
    # TODO: assert name is a string
    print("Hello, " + name + "!")
output: def greet_to(name):
    """Print a greeting to the name provided."""
    # assert name is a string
    assert isinstance(name, str), "name must be a string"
    print("Hello, " + name + "!")