How to use the lookatme.config function in lookatme

def test_code_yaml(mocker):
    """Test code block rendering with yaml language
    """
    mocker.patch.object(lookatme.config, "LOG")
    fake_config = mocker.patch.object(lookatme.render.pygments, "config")
    fake_config.STYLE = {
        "style": "monokai",
    }

    rendered = render_markdown("""
```yaml
test: a value
test2: "another value"
array:
  - item1
  - item2
  - item3
```""")

    assert len(rendered) == 8

def test_headings(mocker):
    """Test basic header rendering
    """
    mocker.patch.object(lookatme.config, "LOG")
    fake_config = mocker.patch.object(lookatme.render.markdown_block, "config")
    fake_config.STYLE = TEST_STYLE

    rendered = render_markdown("""
# H1
## H2
### H3
---
""")

    # three lines for the headings plus an extra line of padding after each
    # and one line of padding before the first one
    assert len(rendered) == 7

    stripped_rows = [
        b"",

def __init__(self, input_stream, theme, style_override=None, live_reload=False):
        """Creates a new Presentation

        :param stream input_stream: An input stream from which to read the
            slide data
        """
        self.input_filename = None
        if hasattr(input_stream, "name"):
            lookatme.config.SLIDE_SOURCE_DIR = os.path.dirname(input_stream.name)
            self.input_filename = input_stream.name

        self.style_override = style_override
        self.live_reload = live_reload
        self.tui = None

        self.theme_mod = __import__("lookatme.themes." + theme, fromlist=[theme])

        if self.live_reload:
            self.reload_thread = threading.Thread(target=self.reload_watcher)
            self.reload_thread.daemon = True
            self.reload_thread.start()

        self.reload(data=input_stream.read())

.. code-block:: yaml

        bullets:
          '1': "•"
          '2': "⁃"
          '3': "◦"
          default: "•"

    See :any:`lookatme.tui.SlideRenderer.do_render` for argument and return
    value descriptions.
    """
    list_level = _list_level(stack[-1])
    pile = urwid.Pile(urwid.SimpleFocusListWalker([]))

    bullets = config.STYLE["bullets"]
    list_bullet = bullets.get(str(list_level), bullets["default"])

    res = urwid.Columns([
        (2, urwid.Text(("bold", list_bullet + " "))),
        pile,
    ])
    stack.append(pile)
    return res