try a package structure

#!/usr/bin/env python3

from .core import Eins

import paho.mqtt.client as mqtt

from command import Command

from helpers import *

from .command import Command

from .helpers import *

class Eins:

    def __init__(self,

#!/usr/bin/env python3

from core import *

from eins import Eins

eins = Eins()

#!/usr/bin/env python3

from manager import *

from eins import Manager

with Manager() as eins:

    pass