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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 draw_diagram(graph, pos=None, with_labels=True, offset=None, **kwds):
 """ Draw a diagram for graph using Matplotlib. Draw graph as a simple energy diagram with Matplotlib with options for node positions, labeling, titles, and many other drawing features. See examples below. Parameters graph : `networkx.Graph` A NetworkX graph. pos : mapping, optional A mapping with nodes as keys and positions as values. Positions should be sequences of length 2. If not specified (default) a diagram layout positioning will be computed. See `networkx.drawing.layout` and `pyrrole.drawing` for functions that compute node positions. with_labels : `bool`, optional Set to `True` (default) to draw labels on the nodes. offset : array-like or `str`, optional Label positions are summed to this before drawing. Defaults to ``'below'``. See `draw_diagram_labels` for more. Notes ----- Further keywords are passed to `draw_diagram_nodes` and `draw_diagram_edges`. If `pos` is `None`, `diagram_layout` is also called and have keywords passed as well. The same happens with `draw_diagram_labels` if `with_labels` is `True`. Examples -------- """

    if pos is None:
        pos = diagram_layout(graph, **kwds)  # default to diagram layout

    node_collection = draw_diagram_nodes(graph, pos, **kwds)  # noqa
    edge_collection = draw_diagram_edges(graph, pos, **kwds)  # noqa
    if with_labels:
        if offset is None:
            # TODO: This changes the default behaviour of draw_diagram_labels.
            offset = "below"
        draw_diagram_labels(graph, pos, offset=offset, **kwds)
    _plt.draw_if_interactive()