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pytest-ipywidgets

library1.57.4pypypiunverified

pytest-ipywidgets is a pytest plugin for testing Jupyter interactive widgets (ipywidgets). It provides fixtures to render widgets in a virtual output and simulate interactions. The latest version is 1.57.4, with a monthly release cadence.

testing

pip install pytest-ipywidgets

INSTALL

IMPORT

SIG · PYTEST-IPYWIDGETS

pytest-ipywidgets

testingpythonv1.57.4

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

ipywidgets_widget_factory

✓ from pytest_ipywidgets import ipywidgets_widget_factory

✗ from pytest_ipywidgets import fixture

The fixture is named ipywidgets_widget_factory, not fixture.

Create a widget and verify its attributes using the ipywidgets_widget_factory fixture.

import ipywidgets as widgets from pytest_ipywidgets import ipywidgets_widget_factory def test_button(ipywidgets_widget_factory): button = ipywidgets_widget_factory(widgets.Button, description='Click me') assert button.description == 'Click me'

Debug

Known issues

gotchaThe fixture `ipywidgets_widget_factory` must be a parameter in your test function; it is not imported as a standalone function. Attempting to call it directly without fixture injection will raise a fixture lookup error.

fix

Ensure the fixture name is passed as a parameter to the test function.

affects: all

deprecatedThe `widget` fixture from older versions (<1.0) has been replaced by `ipywidgets_widget_factory`. Using the old name will raise a fixture not found error.

fix

Update test functions to use `ipywidgets_widget_factory` instead of `widget`.

affects: <1.0

gotchaThe `ipywidgets_widget_factory` fixture does not support all ipywidgets traits (e.g., layout, style) in versions prior to 1.5. If you need to test layout properties, upgrade to >=1.5.

fix

Upgrade to pytest-ipywidgets>=1.5 to fully support layout and style traits.

affects: <1.5

Upgrade

Version history

1.57.4latest on PyPI · released May 14, 2026

Audit

Dependencies

pytestrequiredCore dependency for running tests

ipywidgetsrequiredWidgets to test

jupyterlaboptionalOptional: for testing in JupyterLab environment

Agent activity

6 hits · last 30 days

node

Resources

No resource links recorded.