Steve D'Aprano wrote:
The paradox of the axe is one illustration of the difficulty in defining "the same" in full generality.
The axe situation doesn't arise in Python, because "same object" in Python is a concept that only applies to objects existing at the same time. There's no way to even ask a question like "does a refer to the same object that b did a second ago", because the only way to test object identity is to use the 'is' operator, which takes two expressions evaluated at the same time. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
