return an object of a different class

[spam]

How can I do something like this in python:

#!/usr/bin/python3.1
class MyNumbers:
  def __init__(self, n):
    self.original_value = n
    if n <= 100:
      self = SmallNumers(self)
    else:
      self = BigNumbers(self)

class SmallNumbers:
  def __init__(self, n):
    self.size = 'small'

class BigNumbers:
  def __init__(self, n):
    self.size = 'big'

t = MyNumbers(200)


When I do type(t) it says MyNumbers, while I'd want it to be BigNumbers, 
because BigNumbers and SmallNumbers will have different methods etc...

Do I need to use metaclasses?

Thanks.
--
Yves.                                                  http://www.SollerS.ca/
                                                       http://blog.zioup.org/
--
http://mail.python.org/mailman/listinfo/python-list