use

Cauldron.api.use(name)

Activae a KTL backend in Cauldron.

Parameters:name (str) – The name of the KTL backend to use.

You should only call this function once per interpreter session. It will raise a RuntimeError if it is called when Cauldron has been already set up. After this call, it is safe to make imports from Cauldron KTL API modules:

import Cauldron
Cauldron.use("local")
from Cauldron import ktl