Passing variables from widget values to further functions on button click

The example is a bit complex: would recommend getting the smallest thing (not) running first.

At first glance: on_click takes a function, not the output of a function, so more like .on_click(print_lid).

If it is unpalatable to reference the variables inside print_lid, make a second one, e.g. def on_click) that gathers all the values and documents its intent more clearly.

As for whether something shows based on another widget’s value: dlink is great: the third option provides a callable which has a much simpler signature than observe.

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