Jupyter Notebook中ipywidgets复选框组互斥禁用实现问询

Got it, let's get those checkbox groups working exactly how you want—only one selected per group, with the old selection automatically unchecking when a new one is picked. Here's a straightforward, reusable solution with breakdowns:

Step-by-Step Solution #

We'll create an event handler function that manages the single-selection logic, then attach it to every checkbox in each group so they know how to react when clicked.

Full Modified Code #

import random
from ipywidgets import widgets, display

def on_checkbox_change(change, checkbox_group):
    # Only trigger when a checkbox is being checked (ignore uncheck actions)
    if change['new'] is True:
        # Loop through all checkboxes in the current group
        for cb in checkbox_group:
            # Uncheck any checkbox that isn't the one the user just selected
            if cb != change['owner']:
                cb.value = False

for ind in range(0,10):
    print(f'Some text {ind}')
    cb_inner = []
    a = random.randint(0,3)
    for el in range(0,3):
        cb_value = True if el == a else False
        A = widgets.Checkbox(value=cb_value, description=f'cb{el}')
        cb_inner.append(A)
    
    # Link the event handler to each checkbox in this group
    for cb in cb_inner:
        # Pass the group reference to the handler so it knows which boxes to update
        cb.observe(lambda change, group=cb_inner: on_checkbox_change(change, group), names='value')
    
    box = widgets.HBox(cb_inner)
    display(box)
    print('---'*41)

Key Details Explained #

• The Event Handler: on_checkbox_change keeps things simple:
  • It only runs when a checkbox is being checked (we don't want to uncheck everything if someone intentionally deselects a box).
  • It iterates through the entire checkbox group, unchecking any box that isn't the one the user just clicked.
• Attaching the Handler: Using cb.observe() we tie the handler to each checkbox's value change. The group=cb_inner in the lambda is critical—it ensures each checkbox passes its own unique group to the handler, so your 10 separate groups will all work independently without cross-interference.
• Readability Touch: I swapped the string concatenation for an f-string (f'Some text {ind}') to make the code cleaner—this is optional but a nice Pythonic improvement.

This setup makes each group of checkboxes behave like a set of radio buttons (single selection) while retaining the checkbox visual style you need.

内容的提问来源于stack exchange，提问作者Mikhail_Sam