human
Solve the following python programming problem given the following code:
@ pytest.fixture (autouse = True) 
def never_echo_bytes(monkeypatch) : 
    "Click's echo function will not strip colorcodes if we call `click.echo`
    with a bytestring message. The reason for this that bytestrings may contain
    arbitrary binary data (such as images).

    Khal is not concerned with such data at all, but may contain a few
    instances where it explicitly encodes its output into the configured
    locale. This in turn would break the functionality of the global
    `--color/--no-color` flag.
    " 
    from click import echo as old_echo 
    def echo(msg = None, * a, **kw) : 
        assert (not isinstance (msg, bytes)) 
        return old_echo (msg, * a, ** kw) 
monkeypatch.setattr ('click.echo', monkeypatch) 
    class Result () : 
        @ staticmethod 
        def undo() : 
            monkeypatch.setattr ('click.echo', old_echo) 
return Result 

    
    

    Fix the buggy line: monkeypatch.setattr ('click.echo', monkeypatch)
assistant
#Here is Python program to fix the buggy line: monkeypatch.

monkeypatch.setattr ('click.echo', echo)