Widget failing to delete

[mathcatsand]

If you look at my session state video that focuses on modifying the behavior of widgets, you can see how even when a widget fully deleted by being removed from the page, there’s a kind of “one load delay” for it to really be gone. (You see it around the 10 minute mark when I nest the checkboxes.)

Session State Introduction

I created a rough draft video showing an introduction to session state. I plan to re-record it with better audio and editing, but I wanted to get community feedback before I invested in a more polished presentation. The video is aimed toward users who have either read through documentation already, or walked through their first app creation in another basic tutorial. Many questions in the Using Streamlit forum seem to boil down to details about session state, so these are the details I was figu…

If a widget is deleted, you need to reload the page before recreating it for Streamlit to recognize it as deleted.

@Matthew_King

I think the snippet below should not be generating the widget with the same key error, but it does.

Did you link the rest of your code somewhere? The bit in the OP wasn’t enough to reproduce the error, so if you can provide enough code for the community to execute and get the error, then you’ll likely get a clearer answer.