>>> from use_custom_th import AnOddClass
>>> odd_stuff = AnOddClass()
>>> odd_stuff.very_odd = 0
Traceback (most recent call last):
  File "test.py", line 25, in ?
    odd_stuff.very_odd = 0   
  File "C:\cvsroot\traits\traits.py", line 1119, in validate
    raise TraitError, excp
traits.traits.TraitError: The 'very_odd' trait of a AnOddClass 
instance must be a positive odd integer or an integer in the 
range from -10 to -1, but a value of 0 was specified.
