On Apr 11, 10:36 am, "antred" <[EMAIL PROTECTED]> wrote: > > def b(item, a): > > a.val = a.val + 1 > > return item + a.val > > This is where the problem lies, specifically the line a.val = a.val + > 1 > What happens here is that the 1st a.val refers to a member of the > class instance a, called val ... which does not yet exist and is > therefore created as the result of taking the val member of the class > A and adding 1 to it. In other words, a.val is not the same variable > as A.val. Are you following? If not, change your b() method to this: > > def b(item, a): > a.val = a.val + 1 > assert a.val is A.val > return item + a.val > > and see what happens.
OK, I see that. I thought I was creating an instance of the class A() when I called the list comprehension and that the a parameter in b() was then a reference to that instance. What can I do instead? -- http://mail.python.org/mailman/listinfo/python-list
