add_new_tab_widget.py

from bokeh.models.widgets import Panel, Tabs, Button
from bokeh.io import curdoc
from bokeh.plotting import figure
from bokeh.layouts import column, widgetbox

p1 = figure(plot_width=300, plot_height=300)
p1.circle([1, 2, 3, 4, 5], [6, 7, 2, 4, 5], size=20, color="navy", alpha=0.5)
tab1 = Panel(child=p1, title="circle")

tabs = Tabs(tabs=[tab1])
button = Button(label='Add a tab')

button = Button(label='Add a tab')

wb = widgetbox(tabs, button)
layout = column([wb])

def add_a_tab_button_callback():

    p2 = figure(plot_width=300, plot_height=300)
    p2.line([1, 2, 3, 4, 5], [6, 7, 2, 4, 5], line_width=3, color="navy", alpha=0.5)
    new_tab = Panel(child=p2, title="line")

    cur_old_tabs = wb.children[0]

    new_tabs = Tabs(tabs=cur_old_tabs.tabs + [new_tab])
    wb.children = [new_tabs, button]

button.on_click(add_a_tab_button_callback)
curdoc().add_root(layout)