Kim Branson wrote:
> Hi i'm interested in implementing a factoryclass in python
>
> What i'd like to do is have my factoryClass produce an instance of a
> class with some methods defined in arguments to the factory class.
>
> The classes that are produced have many common methods, but a single
> unique method. This method actually is a series of calls to a c++ api.
> Depending on what we are doing with the produced class, i'd like the
> unique method to call api function A, or api function B etc.
> Alternatively the unique method might call A and the B and return a
> dict of the results.
>
> I'm doing this because i'd like all my produced class instances to
> simply have a calculateResults method which will then go and do the
> right thing. I don't want to set some values in the init, like A==
> True and have a if A: call methodA etc statement.
Do you need to be passing in the unique method, or can you just make a
base class with the common methods and subclasses that define their
unique methods? For example,
class Base(object):
def a(self):
pass
def b(self):
pass
def calculateResults(self):
raise NotImplementedError
class A(Base):
def calculateResults(self):
return self.a() * self.b()
class B(Base):
def calculateResults(self):
return dict(a=self.a(), b=self.b())
Kent
_______________________________________________
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
