On Mon, 03 Mar 2014 13:48:39 -0500, Terry Reedy wrote: > On 3/3/2014 4:42 AM, ast wrote: > >> Consider following code: >> >>>>> A=7 >>>>> B=7 >>>>> A is B > > The 'is' operator has three uses, two intended and one not. In > production code, 'is' tests that an object *is* a particular singular > object, such as None or a sentinel instance of class object. In test > code, 'is' can also be used to test details of a particular > implementation, such as pre-allocation of small ints. New python > programmers also use it to confuse themselves.
+1 QOTW -- Steven -- https://mail.python.org/mailman/listinfo/python-list
