How to validate token in Azure AD with Python

Question

1. I have registered two apps following this Azure AD demo from step1 to step 4.
2. And I git cloned Azure AD demo and ran it successfully.
3. But I want to request my custom API, so I replace the resource,but i get something wrong. The resource URI appears like http://<talent-id>/TodoListDaemon.

Now, I have two questions:

1. How do I set up a true resource?
2. How extra work in my custom api