Is it possible to call custom Python scripts from PowerBi via button clicks or any other user trigge

Anonymous , I doubt that is possible on button press. What you want to.

Power Automate visual has been recently added. But I doubt that has python connector with power bi.

https://powerbi.microsoft.com/en-us/blog/power-bi-april-2021-feature-summary/#post-14480-_Toc68689095

Thanks amitchandak 

I have integreted a ML model to powerBI. Script is in Python.  Requirement is whenever user trigger an event (in any form button, slicer or any other form on canvas), it has to run python script and generate output based on those parameters. (Want to pass parameters dynamically)