[FIXED] ipywidgets dynamic creation of checkboxes and selection of data

Issue

I want to create a list of checkboxes so users can select from a list of data. I've created checkboxes for each piece of data and I'd now like the ticking of these checkboxes to add data to a list.

import ipywidgets as widgets

data = ["data1", "data2", "data3", "data4"]

selected_data = []

checkboxes = [widgets.Checkbox(value=False, description=label) for label in data]

widgets.VBox(children=checkboxes)

I'd like to do something along the lines of

def add_to_selected(d):
    selected_data.append(d)

checkboxes[0].observe(add_to_selected)

Where this would add a value to the selected_data list. I don't know how to get the checkboxes in the VBox to behave like this.

Solution

I've found a solution that works but I feel is quite hacky. I'd appreciate it if anyone has any suggestions on a way to simplify it.

This solutions allows the creation of a checkbox for each key in the data dictionary. On clicking the checkbox the selected key is added to the selected_data list.

import ipywidgets as widgets

data = {"label_1":"data_1", "label_2":"data_2", "label_3":"data_3"}

names = []
checkbox_objects = []
for key in data:
    checkbox_objects.append(widgets.Checkbox(value=False, description=key))
    names.append(key)

arg_dict = {names[i]: checkbox for i, checkbox in enumerate(checkbox_objects)}

ui = widgets.VBox(children=checkbox_objects)

selected_data = []
def select_data(**kwargs):
    selected_data.clear()

    for key in kwargs:
        if kwargs[key] is True:
            selected_data.append(key)

    print(selected_data)

out = widgets.interactive_output(select_data, arg_dict)
display(ui, out)

Answered By - Gar