Use interactive widgets
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PyCharm supports interactive widgets that provide integration between Python code running in the notebook kernel and JavaScript running in the browser. Refer to the Jupyter widgets documentation for more details about the variety and specifics of interactive widgets.
Adding widget code to your Jupyter notebook
To add an interactive widget to your notebook, first add a code cell. Press Alt + Shift + A (Windows) or ⌥ ⇧ A (macOS) to insert a new cell above the currently selected cell, or Alt + Shift + B (Windows) or ⌥ ⇧ B (macOS) to create a new cell below the selected cell. See Edit Jupyter notebook files for more details.
When editing code of an interactive widget, use code completion to facilitate adding constructs and quick fixes to add missing import statements.
To preview the widgets, you need to execute the corresponding code cell. Note that when you switch the PyCharm theme, the background color of an interactive output changes once you execute the code cell.
You can see the values of the widget variables inlined in the editor and listed in the Variables tab of the Jupyter tool window.
Handling security requirements
If you open any JavaScript code in a notebook file created outside of your project, that notebook is considered untrusted. According to the security model established for Jupyter notebooks, untrusted JavaScript code is never executed. That's why when you try to execute JavaScript in such a notebook, you will receive an error message: Notebook is not trusted. JavaScript hasn't been executed.
Select the Trusted checkbox on the Jupyter toolbar to explicitly allow executing JavaScript in your Jupyter notebook.
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