I can be able to get the list of servers or instances using the following command as well as code in my devserver.

CLI code:

nova list

python code:

instances = nt.servers.list()

Now I need to get the Flavor of server, I have tried the following command in CLI , It works fine.

CLI Command:

nova show Instance-1

Now I need to get the same using python code. Someone let me know the way for the same.