Hi, Trying to learn Python OOP. An example from a book, may not be formated after sending post but:
class Contact: all_contacts = [] def __init__(self, name, email): self.name = name self.email = email Contact.all_contacts.append(self) OK, no I do this: >>> c = Contact('aaa','bbb') >>> c = Contact('ccc','ddd') >>> c = Contact('eee','fff') >>> for i in Contact.all_contacts: print i.name + ' ' + i.email aaa bbb ccc ddd eee fff >>> >>> c.name 'eee' So wouldn't be good to add a check that the var (in this case c) does not point to any object before creating an object to keep the list correct? Also all_contacts is a class variable. I think the author is hinting that this would be a good idea for a contact list, But I don't fully see the usage of it. How would each object use a class variable like this? What would be the dot notation? I realize this is a code fragment and is no way implementable code. Any help appreciated. BTW, it's from "Python3 Object Oriented Programming..." by D. Philips - very clearly written and enjoying it...Thanks -- http://mail.python.org/mailman/listinfo/python-list