<filename>appliedpy_ecourse/class8/inventory/__init__.py

from inventory.arista_gather_inventory import AristaGatherInventory
from inventory.cisco_gather_inventory import CiscoGatherInventory

<filename>appliedpy_ecourse/class8/inventory/__init__.py

from inventory.arista_gather_inventory import AristaGatherInventory
from inventory.cisco_gather_inventory import CiscoGatherInventory
