I am implementing a set of specifications that were designed to be OO
language neutral.
Several classes are specified as being abstract; so therefore there
should be no instances of them, correct?
However in the classes that are subclasses what is the correct way in
Python to implement them?
I am using the zope.interface module as well.
For example:
class IA(Interface):
m = Int()
p = TextLine()
class IB(Interface):
x = Bool()
s = Text()
class A(object):
""" This is an abstract class with attributes m is an int and p is a
string"""
implements(IA)
pass
class B(A):
implements(IB)
def __init__(self,m,p,x,s):
m=m
p=p
x=x
s=s
or should it be like:
class A(object):
""" This is an abstract class with attributes m is an int and p is a
string"""
implements(IA)
def __init__(self,m,p):
m=m
p=p
class B(A):
implements(IB)
def __init__(self,m,p,x,s):
A.__init__(m,p)
x=x
s=s
or maybe even:
class B(A):
implements(IB)
def __init__(self,m,p,x,s):
super(A.__init__(m,p))
x=x
s=s
Thanks for any pointers.
Tim
--
Timothy Cook, MSc
Health Informatics Research & Development Services
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