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.

Python 3.3.0
>>> {print("a"):print("b")}
a
b
{None: None}
>>> d = {}
>>> d[print("a")] = print("b")
b
a
>>>

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