Hi Mark, >> I was surprised to see class Name() work (in Python 2.6.5 at least). Is this >> equivalent to class Name( object ) or does this create an old style class? >> Going forward into the 2.7/3.x world, is there a preferred style?
> RTFM? :) I am reading TFM :) Here's why I'm confused. The following paragraph from TFM seems to indicate that old style classes are the default: Quote: For compatibility reasons, classes are still old-style by default. New-style classes are created by specifying another new-style class (i.e. a type) as a parent class, or the “top-level type” object if no other parent is needed. The behaviour of new-style classes differs from that of old-style classes in a number of important details in addition to what type() returns. Some of these changes are fundamental to the new object model, like the way special methods are invoked. Others are “fixes” that could not be implemented before for compatibility concerns, like the method resolution order in case of multiple inheritance. http://docs.python.org/reference/datamodel.html#newstyle Yet TFM for 2.6.5 shows all class examples without specifying a parent class. http://docs.python.org/tutorial/classes.html I've been taught that the proper way to create new style classes has been to always specify an explicit "object" parent class when creating a new class not based on other classes. Somewhere along the line I seemed to have missed the fact that it is no longer necessary to define classes with 'object' as a parent in order to get a new style class. In other words, it seems that the following are now equivalent: class Name: -AND- class Name( object ): My impression was the "class Name:" style created an old style class. Thanks for your help! Malcolm _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
