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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def load_notebook(resources=None, verbose=False, hide_banner=False, load_timeout=5000):
    ''' Prepare the IPython notebook for displaying Bokeh plots.

    Args:
        resources (Resource, optional) :
            how and where to load BokehJS from (default: CDN)

        verbose (bool, optional) :
            whether to report detailed settings (default: False)

        hide_banner (bool, optional):
            whether to hide the Bokeh banner (default: False)

        load_timeout (int, optional) :
            Timeout in milliseconds when plots assume load timed out (default: 5000)

    .. warning::
        Clearing the output cell containing the published BokehJS
        resources HTML code may cause Bokeh CSS styling to be removed.

    Returns:
        None

    '''

    global _NOTEBOOK_LOADED

    from .. import __version__
    from ..core.templates import NOTEBOOK_LOAD
    from ..util.serialization import make_id
    from ..resources import CDN
    from ..util.compiler import bundle_all_models

    if resources is None:
        resources = CDN

    if not hide_banner:

        if resources.mode == 'inline':
            js_info = 'inline'
            css_info = 'inline'
        else:
            js_info = resources.js_files[0] if len(resources.js_files) == 1 else resources.js_files
            css_info = resources.css_files[0] if len(resources.css_files) == 1 else resources.css_files

        warnings = ["Warning: " + msg['text'] for msg in resources.messages if msg['type'] == 'warn']
        if _NOTEBOOK_LOADED and verbose:
            warnings.append('Warning: BokehJS previously loaded')

        element_id = make_id()

        html = NOTEBOOK_LOAD.render(
            element_id    = element_id,
            verbose       = verbose,
            js_info       = js_info,
            css_info      = css_info,
            bokeh_version = __version__,
            warnings      = warnings,
        )

    else:
        element_id = None

    _NOTEBOOK_LOADED = resources

    custom_models_js = bundle_all_models() or ""

    nb_js = _loading_js(resources, element_id, custom_models_js, load_timeout, register_mime=True)
    jl_js = _loading_js(resources, element_id, custom_models_js, load_timeout, register_mime=False)

    if not hide_banner:
        publish_display_data({'text/html': html})
    publish_display_data({
        JS_MIME_TYPE   : nb_js,
        LOAD_MIME_TYPE : jl_js
    })