This can be in one line

if not self._tooltip:
    return

if not self._exec_data:
    return

like

if not self._tooltip or not self._exec_data:

Remove import json line 227

Also, if someone has HTML in JSON like I do, it will show in the tooltip

Maybe we can remove any HTML tags from the tooltip text ? Something like

tooltip_text = re.sub(r'<[^>]+>', '', tooltip_text)

Edit: Also, please clean up the commit history so we can have a single clear commit about this

Thanks for the review! I've made the changes you requested.

For the json showing the raw html - I feel like if you used the tooltip_label feature like:

tooltip_label: "{data[absoluteChange]}<br>{data[lastPrice]}"

you'd get your expected formatting (similar to how the Weather widget is working). This also leaves it up to the one configuring their widget to choose whether they want the full raw json or to have some formatting.

What do you think?