<filename>extension/__init__.py

from .utils import subClass
from .field import Field, intField, strField, fileField
from .element import Element

from .page import Page
from .struct import Struct, sequentialStruct

<filename>extension/__init__.py

from .utils import subClass
from .field import Field, intField, strField, fileField
from .element import Element

from .page import Page
from .struct import Struct, sequentialStruct
