Hi, I'm studying the descriptor protocol and its usage from the following document:
http://users.rcn.com/python/download/Descriptor.htm There is some sample code: http://users.rcn.com/python/download/Descriptor.htm#descriptor-example that behaves in a different way on my machine than the example suggests: In [2]: a=MyClass() In [3]: a.x Retrieving var "x" Retrieving var "x" Out[3]: 1 On the other hand, in the 'plain' Python shell, it's invoked only once as expected: >>> a=desc.MyClass() >>> a.x Retrieving var "x" 10 >>> Should I take as granted that IPython might in some cases access an attribute of an object more than once even in face of side effects, or is this a bug? Regards, Jakub Hegenbart -- http://mail.python.org/mailman/listinfo/python-list
