model.py        -> entity
view.py         -> header,console
controller.py   -> dashboard,save,create,read,delete,feed
main.py         -> main

view.py
-------
import os
from controller import pets,rank,food

controller.py
-------------
import pickle
from os import path
from model import pets,rank,food,pettype

main.py
-------
import os
import sys
from view import header,console
from controller import dashboard,save,create,delete,feed
from controller import pets,rank,food,pettype