legends_item_visibility

import numpy as np

from bokeh.plotting import figure, show

x = np.linspace(0, 4*np.pi, 100)
y = np.cos(x)

p = figure(height=300)

# create two renderers with legend labels
p.circle(x, y, legend_label="cox(x")
p.line(x, 2*y, legend_label="2*cos(x)",
       line_dash=[4, 4], line_color="orange", line_width=2)

# set legend label visibility for second renderer to False
p.legend.items[1].visible = False

show(p)