def cc_diagram(cluster_name):
x, y = get_hr_data(cluster_name)<EOL>y_range = [max(y) + <NUM_LIT:0.5>, min(y) - <NUM_LIT>]<EOL>pf = figure(y_range=y_range, title=cluster_name)<EOL>_diagram(x, y, pf)<EOL>show_with_bokeh_server(pf)<EOL>
Create a :class:`~bokeh.plotting.figure.Figure` to create an H-R
    diagram using the cluster_name; then show it.