On 03/01/2016 03:14 AM, Serhiy Storchaka wrote:

The difference is that the copy module sets object's state before adding
items and key-value pairs, but the pickle module sets object's state
after adding items and key-value pairs. If append() or __setitem__()
depend on the state of the object, the pickling is incompatible with the
copying.

Aren't there tests to ensure the unpickled/copied object are identical to the original object?

Under which circumstances would they be different?

--
~Ethan~
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