> messing about with classes I've come across something basic that I don't > understand.
As you say this has nothing to do with classes its more basic. Its about namespaces. Try reading the namespaces topic in my tutor for more info. Meanwhile lets simplify by removing the class bit def f(): print x def g(): x = x + 1 # expanded version of ++ shortcut print x x = 42 f() # prints 42 g() # gives an error The error is because you are assigning to x thus creating a local var of that name, but you are using x in the definition of x which doesn't make any kind of sense def h(): global x x += 1 print x h() # prints 43 HTH, Alan G Author of the learn to program web tutor http://www.freenetpages.co.uk/hp/alan.gauld _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
