On 11/7/2012 12:08 PM, Serhiy Storchaka wrote:
On 07.11.12 17:12, Nick Coghlan wrote:
Since you've indicated the implementation is in the wrong here and you
also want to preserve opcode semantics, I think Skip's patch is
correct, but also needs to be applied to dict comprehensions (now we
have them). The extra bytecode is only ROT_TWO, which is one of the
cheapest we have kicking around :)
Not only to dict comprehensions, but also to item assignments. It
will be weird if a dict comprehension and a plain loop will be
inconsistent.
Just to be clear: the reference guide says that the behavior *SHOULD BE*
(but is not yet) this:
Python 3.3.0
>>> {print("a"):print("b")}
a
b
{None: None}
>>> d = {}
>>> d[print("a")] = print("b")
b
a
>>>
Is this or is this not "weird" to you?
--Ned.
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