human
Solve the following python programming problem given the following code:
@contextmanager
def patch_open():
assistant
#Here is the Python code you requested.

    """Patch open() to allow mocking both open() itself and the file that is
    yielded.
    Yields the mock for "open" and "file", respectively.
    """
    mock_open = MagicMock(spec=open)
    mock_file = MagicMock(spec=file)
    @contextmanager
    def stub_open(*args, **kwargs):
        mock_open(*args, **kwargs)
        (yield mock_file)
    with patch('__builtin__.open', stub_open):
        (yield (mock_open, mock_file))