bokeh - how to add legend in the .circle call with the use of ColumnDataSource -


i trying add legend in .circle glyph using bokeh. following code total_ss defined columndatasource, admin, mean, n_size existing variables in total_ss. code ran fine without error msg , displayed graph correctly without legend.

anyone has ideas can overcome , add legend plot?

thanks much!

     f.circle(x='admin',y='mean', size = 'n_size',      fill_alpha = .2, line_dash=[5,3],  legend = "total score",       source=total_ss)


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