Inheriting Classes Across Files

[Tina]

I tried that as I understand it. I'm sure I'm making a silly error in all
this. Here is a simple example of what I'm trying:

  --- (File super_class.py) ---

class base_class:

  def sample():
    return "Returned!"

  --- (File sub_class.py) ---

import super_class

class derived_class(base_class):

  def sample2():
    return "Returned Twice!"
  
 --- (End) ---

Traceback (most recent call last):
  File "/home/tina/python/test/sub_class.py", line 3, in -toplevel-
    class derived_class(base_class):
NameError: name 'base_class' is not defined


John Roth wrote:

> 
> "Tina" <bad_addy at no_domain.com> wrote in message
> news:E6K8c.748$Dv2.185 at newsread2.news.pas.earthlink.net...
>> In my program I need derived classes to inherit from the super class.
>>
>> I can do this but I'd like to split the super class into it's own file.
>>
>> How do you do this? When I split the code I start getting errors.
> 
> The module with the superclass has to be imported before
> the subclass is defined.
> 
> Be very careful you don't get into an import loop.
> That way lies madness.
> 
> John Roth
>>