On 19/03/2008, Allen Fowler <[EMAIL PROTECTED]> wrote:
> I have a super class that accepts many arguments to it's constructor, and a
> subclass that should define one additional argument.
>
> What's the most "pythonic" way to make this work?
class BaseClass(object):
def __init__(self, x, y, z, foo='foo'): # whatever
# etc
class SubClass(BaseClass):
def __init__(self, t, *args, **kw):
BaseClass.__init__(self, *args, **kw)
# do something with t
This does mean that the special sub class argument has to come before
the base class arguments when you create instances.
Whether you call BaseClass.__init__ early or late in the subclass init
method could depend on what your classes are doing. Remember, in
Python, __init__ only initializes objects, it doesn't create them.
It's just another bit of code that you can call whenever you want.
--
John.
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