Thanks for the followup, I just wanted to mention that you still need to read that stuff thru several times, because... there are no variables in python (yea I know others will say otherwise ;) Yep, I said it, none. There are NAMES, thats why there are NAMESPACES. A name is just a reference or 'handle' to an object, because..... everything in python is an OBJECT,(except for names, they are just names). And before you go and wipe out all those double underscores note that python uses double underscores as special methods and other internal details( read the docs). A quick example is :( yeah it's deja vu) py>class bla: ... def __init__(self): ... self.data=0 ... def setData(self, data): ... self.data = data ... def getData(self): ... return self.data ... def nullData(self): ... self.setData(None) Not all underscores method names are unnecessary. __init__ is a special method that is called by python when we create an instance of this class. Most of the double underscore methods are special methods and are part of python( later you will see they can be used for object customization ) Now back to self... self is reference to.. well self. Python is explicit . A class has it's own namespace so we pass a referance around to all it's member functions. when we set an attribute of a class it can be done inside or out . Self.data is an example of setting a attribute of an object from inside the class ( notice we referance ourselves inside the class , because we are assigning the name to that namespace.) An example of settng attrbutes outside a class: bl = bla() bl.MyNewData = [1,2,3,4,5] dir(bl)
As a matter of fact a common use of a class is like a container to store data. class null: pass a =null() a.name = 'mike' a.weight= 220 dir(a) del a.name Sorry if it is incoherent, I am way past bed time . M.E.Farmer -- http://mail.python.org/mailman/listinfo/python-list
