preserving namespaces with sub-packages

[Kevin Altis]

I have a module file in a package that has gotten quite large and I would
like to split it up. Since I don't want to include the whole file, I've
created something that should be equivelant which I'll call 'widgie.py' and
is shown below. I'll call the package 'framework'

---
file: widgie.py

class BaseWidgie:
    def __init__( self ):
        self.name = 'BaseWidgie instance'

class Button(BaseWidgie):
    def __init__( self ) :
        self.name = 'Button instance'
---

If I refer to class Button in the current framework, the reference is:
  framework.widgie.Button

So, what I would like to do is create a directory in the current package
named 'widgie' that acts as a sub-package and the classes such as Button
above will be referenced the same way. The directory structure looks like:

framework directory
  __init__.py
  various module files for the framework
  widgie directory
    __init__.py
    basewidgie.py
    button.py

And the split files look like:

---
file: basewidgie.py

class BaseWidgie:
    def __init__( self ):
        self.name = 'BaseWidgie instance'

---

---
file: button.py

from basewidgie import BaseWidgie

class Button(BaseWidgie):
    def __init__( self ) :
        self.name = 'Button instance'
---

So the question is what should the imports in __init__.py look like so that
the sub-package effectively looks exactly the same as when there was a
single widgie.py module file in the framework package? I must not be
manipulating the namespaces right because so far I end up with stuff like:
  framework.widgie.button.Button

In addition, it would be nice have __init__.py automatically load all the
files in the widgie directory rather than having to hard-code each filename.
Hopefully I'm explaining the problem correctly. Any suggestions or
solutions?

ka