import - python importing class from python package -

I am using Python in CIG environment and I use MVC design pattern.
So I currently have the following hierarchy:

  main.py mvc / __init__.py model / __init__.py session_initiator.py See / __init__.py controller / __init__.py interface.py < / Code>  
 I defined class session_initiator in Session_initiator.py 
 I am trying to import the session_initiator class inside interface.py 
 - The following code in the interface is successful:  
  Import Model   
 But when I try to do anything:  
  Model import from session_initiator   
 me One meets error This model is not a module.  
 Please do not refer to sys.path resolution - because I am using an environment where I am unable to edit it.  
 Thank you.  
  Edit : All init files are empty.  
  Edit : I have changed the line to:    Model import session_initator from MVC   < P> And this line works! But now when you try to:  
  self.session_init = session_initiator ()   
 I get the following error:  
  Type error: 'module' object is not worth the corner    
 
 
 Do not make names like.  
  to .. Model import session_initiator   
 In addition,  session_initiator  is now a module, not a class. If you want to import something from that module  inside  then you have to do this.  
  to .. model.session_initiator import session_initiator