from itolapi.comm import Comm  # NOQA
from itolapi.itolexport import ItolExport  # NOQA
from itolapi.itol import Itol  # NOQA

from .comm import Comm  # NOQA
from .itolexport import ItolExport  # NOQA
from .itol import Itol  # NOQA

Use relative imports in __init__.py