to show that some longer action was running you could use some code like this in the past: mw.progress.start() # some action mw.progress.finish() see e.g. Damien’s Basic Printing Support add-on, source . Up to version .44 this code in an add-on gave you a spinning wheel while the action was runnin…

I added some notes about this to the docs today: https://addon-docs.ankiweb.net/background-ops.html

Progress indicator (mw.progress.start) in .45+ / basic printing support

Rumo November 25, 2021, 8:13am 2

I think you’re supposed to use QueryOp or CollectionOp now.
Also see Add-on porting notes for Anki 2.1.45.

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