Button callback to select all checkboxes in CheckboxGroup does not work in Python 2.7.12

ALL software version info (bokeh, python, notebook, OS, browser, any other relevant packages)

Browsers:

• Firefox 53.0 (32-bit)
• Chrome Version 58.0.3029.81 (64-bit)

Python:

• Python 2.7.12
• bokeh 0.12.5

OS: Windows 10 Pro 64-bit

Description of expected behavior and the observed behavior

Create a button to toggle a checkbox group (selecting and unselecting all checkboxes on button click). Does not work on Python 2.7.12 with bokeh 0.12.5

Complete, minimal, self-contained example code that reproduces the issue

from bokeh.io import show
from bokeh.layouts import widgetbox, row
from bokeh.models.widgets import Button, CheckboxGroup
from bokeh.plotting import curdoc, output_file

output_file("states.html", title="states")

states_list = ["Alabama", "Alaska ", "Arizona", "Arkansas", "California",
               "Colorado", "Connecticut", "Delaware", "Florida", "Georgia",
               "Hawaii", "Idaho ", "Illinois", "Indiana", "Iowa", "Kansas",
               "Kentucky", "Louisiana", "Maine", "Maryland", "Massachusetts",
               "Michigan ", "Minnesota", "Mississippi", "Missouri", "Montana",
               "Nebraska", "Nevada ", "New Hampshire", "New Jersey",
               "New Mexico", "New York", "North Carolina", "North Dakota",
               "Ohio", "Oklahoma", "Oregon", "Pennsylvania", "Rhode Island",
               "South Carolina", "South Dakota", "Tennessee", "Texas", "Utah",
               "Vermont", "Virginia", "Washington", "West Virginia",
               "Wisconsin", "Wyoming"]

states = CheckboxGroup(
    labels=states_list,
    active=[0, 1])


def update():
    states.active = list(range(len(states_list)))

select_all = Button(label="select all")
select_all.on_click(update)

group = widgetbox(select_all, states)

layout = row(group)

curdoc().add_root(layout)
curdoc().title = "states"

show(layout)

Source: http://stackoverflow.com/a/39562653/295246

Stack traceback and/or browser JavaScript console output

No traceback and nothing of significance in the JS Console output.

Screenshots or screencasts of the bug in action

[bryevdv]

@DuCorey thanks for the good catch, I agree that this now seems like a usage error. (I missed also the show call in in the code sample). I did fire up a VM to test this and when run as a bokeh app (i.e. not with just python test.py) things work:

So I’m going to go ahead and close this. @cbdelavenne if you believe this is in error please re-open with additional information.

[bryevdv]

@cbdelavenne thanks for the extremely detailed report! We will look at things as soon as we can (hopefully something simple). I’ve marked this as plat:windows for now as this code works for me on OSX