[Tutor] Classes

[Remco Gerlich]

On Tue, Apr 03, 2001 at 06:52:28PM -0600, VanL wrote:
> Here is my second question:
> 
> I am investigating python's inheritance structure.  Given the class
> LinkedList:
> 
> class LinkedList:
>     
>     """ This class provides a generic node for linked lists.  Other
> python classes or
>     objects can inherit from this class to get the ability to represent
> themselves as
>     a linked list. """
> 
>     def __init__(self, name, object=None):
>         self.__label = name
>         if object: self.__link = object
>         else: self.__link = None
> 
> [snip to end]
> 
> 
> and the class NewClass:
> 
> class NewClass(LinkedList):
> 	
> 	def __init__(self):
> 		NewString = "This is a new string"

                LinkedList.__init__(self, "somename")

> 
> 	def NewString(self):
> 		print NewString
> 
> 
> How do I supply the superclass constructor arguments when instancing an
> object of type newclass?  How does this change if I inherit from
> multiple classes?

If you inherit from multiple classes you can call __init__ in each of them,
if necessary.

Btw, the NewString doesn't work, the variable has to be 'self.NewString',
and the function needs a different name (otherwise the self.NewString
assignment in __init__ would overwrite the function).

-- 
Remco Gerlich