I too wonder the same thing. How can importing a python module be so difficult and not even documented lol.

No need for libraries..

Here's what worked for me..

Step1: Upload the module by first opening a notebook >> File >> Upload Data >> drag and drop your module

Step2: Click on Next

Step3: Copy the databricks path for your module. (this path is diplayed in the pop up that you see just after click on Next)

For me , if my module is named test_module the path looks like 

• dbfs:/FileStore/shared_uploads/krishz@company.com/test_module.py

Step4: Append the above to Path (albeit with changes)

• Change 1: Change dbfs:/ to /dbfs/
• Change 2: remove your module name from the path 🙂

Now my path to append looks like

• /dbfs/FileStore/shared_uploads/krishz@company.com

Step5:

import sys
sys.path.append("/dbfs/FileStore/shared_uploads/krishz@company.com")

Step6:

Now you can import simply by using below:

import test_module

Post this, you may write code as if you had imported test_module in your usual Jupyter notebook - No need to worry about any databricks intricacies.

Lemme know if you are unclear about any step. Honestly speaking, I don't know why you were recommended to use libraries for such a simple request.