[Bug]: AttributeError: 'LassoSelector' object has no attribute '_props'

[CakmakHi]

Summary

I used the LassoSelector object to select the single point in the scatterplot. But when I try to update the line color of LassoSelector with the set_props function, I get an error like this AttributeError: 'LassoSelector' object has no attribute '_props'.

Proposed fix

This warning does not occur when the comment symbol is placed at the beginning of the line "self._props.update(props)" in the "set_ props" function of the matplotlib library's widget.py code.

[oscargus]

The properties for LassoSelector is applied to the line stored as self._selection_artist. As such self._props is not defined in the constructor.

I think the correct solution is to redefine set_props for LassoSelector (and in that method set the props of the line), but there may be someone knowing better.

[anntzer]

From a quick look, I'd perhaps try to just get rid of the _props attribute and always store the properties directly in the instantiated artist (creating it as early as possible).

[QuLogic]

It appears that the artist is generally used, and the only real need for _SelectorWidget._props is in SpanSelector.new_axes, which needs to know the properties when attaching a new Axes.