Hi everybody, I was unit testing some code today and I eventually stumbled on one of those "is" issues quickly solved replacing the "is" with "==". Still, I don't quite see the sense of why these two cases are different:
>>> def aFunction(): ... pass ... >>> f = aFunction >>> f is aFunction True <--- Ok, this seems reasonable. Nevertheless, I suspect I shouldn't quite rely on it. >>> class MyClass(object): ... def myMethod(self): ... pass ... >>> c = MyClass() >>> m = c.myMethod >>> m is c.myMethod False <--- What? Why is that? In my mind I was expecting that when the method is assigned to "m" all that it happens is that its address is assigned to the name "m" so that effectively the same address is now pointed to by two names, like in the function case. I googled around for some hint but I wouldn't exactly say I'm clear on the issue just yet... Can anybody shed some light? Or point to a resource to look at? Or what's the bit of python's source code that is responsible for dealing with those assignments? Manu -- http://mail.python.org/mailman/listinfo/python-list
