Defining class attributes + inheritance

[Ethan Furman]

Martin De Kauwe wrote:
> Hi,
> 
> I think this might be obvious? I have a base class which contains X
> objects which other classes inherit e.g.
> 
> class BaseClass(object):
>     def __init__(self, something, something_else):
>         self.something = something
>         self.something_else = something_else
>         # etc
> 
> Typically I would use this like this
> 
> from some_module_name import BaseClass
> 
> class NewClass(BaseClass):
>     def do_something(self):
>          print self.something
>          # etc
> 
> Which is fine. However if I need to inherit additional attributes (to
> NewClass) at the constructor step it means I have to completely
> redefine the constructor [...]

Just make sure and call the parent's constructor, either with

class NewClass(BaseClass):
     def __init__(self, ....):
         BaseClass.__init__(self, other_params)

or

class NewClass(BaseClass):
     def __init__(self, ....):
         super(NewClass, self).__init__(....)

~Ethan~