[Zope] (no subject)

[Hung Jung Lu]

"daniel g. rusch" <drusc-@globalcrossing.com> wrote:
original article:http://www.egroups.com/group/zope/?start=25548
>Let's say I have a class called Chicken in a file called Chicken.py
>
>Now let's say I want to add a method called getSize() to the Chicken
>class. It's a piece of cake to add the method in the Chicken.py file.
>
>But, is it possible to add the method to the Chicken class, but have
>that method in a different file, i.e. some file other than Chicken.py?

Is this a pure Python question? (Zope External methods
are VERY different from Python methods, that's why I need
to ask.)

If you are talking about pure Python, sure, you can add
class members (data or method) at any time.

-----------------------------
File A.py:

class Chicken:
    def __init__(self, size):
        self.size = size
--------------------------------
File B.py:

import A

def getSize(self):
    return self.size

A.Chicken.getSize = getSize

b = A.Chicken(123)
print b.getSize() # prints 123
--------------------------------

If you are using Zope, you must store your
classes where they can be accessed by
Python. Usually /lib/python/Shared/Local
is a good place, make sure to add the
__init__.py file inside the folder. You
then refer to the class as Shared.Local.Chicken.

Hung Jung

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