@Frank Zhang​ - I see that makes sense. So you are not coding in a Databricks notebook correct? You have a Flask application you developed that is running against Databricks cluster/warehouse.

1 - If I understand correctly (as stated above). Do you have the driver installed? I think this would likely require you to use a Simba Driver to create the connection. I think this would be the only way to use ORM.

2 - If you don't want to a driver you can use the Python Connector for Databricks. Check out this blog I wrote that connects a flask application. Note that I don't think ORM would work here but you may be able to find a way to do so.

Is that helpful?