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Advanced inner classes for Python

Project description

This module add some useful features to Python inner classes :

 class MyOuter:
    @inner
    class MyInner:
       def hello(self):
           print('Hello')

outer attribute

The inner class gain an 'outer' attribute that reference its outer class.

  >>> MyOuter.MyInner.outer 
  <class '__main__.MyOuter'>

inner derivation

When the outer class is derived, the inner class is also derived in order to point at the derived outer class.

 class MyChildOuter(MyOuter):
    pass

 >>> MyChildOuter.MyInner.outer
 <class '__main__.MyChildOuter'>

carried inheritance

When the inner class is redefined in an outer subclass, it will automatically derivate from the inner class of the outer superclass.

  class MyChildOuter(MyOuter):
     class MyInner:
       pass

  >>> MyChildOuter.MyInner().hello()
  Hello

inner instantiation

the outer attribute of an inner instance store it's outer instance

  outer = MyOuter()
  
  >>> outer
  <__main__.MyOuter object at 0x03BAA990>
  >>> outer.MyInner().outer
  <__main__.MyOuter object at 0x03BAA990>

Project details


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