Inconsistent viewkeys behaviour

2014-04-28 Thread Joshua Landau
Is there any reference for this strange behaviour on Python 2: set() dict().viewkeys() Traceback (most recent call last): File stdin, line 1, in module TypeError: can only compare to a set dict().viewkeys() set() False ? --

Re: Inconsistent viewkeys behaviour

2014-04-28 Thread Terry Reedy
On 4/28/2014 2:22 AM, Joshua Landau wrote: Is there any reference for this strange behaviour on Python 2: set() dict().viewkeys() Traceback (most recent call last): File stdin, line 1, in module TypeError: can only compare to a set dict().viewkeys() set()

Re: Inconsistent viewkeys behaviour

2014-04-28 Thread Gregory Ewing
Terry Reedy wrote: The left operand determines the result. The manual specifies that and do not have to be consistent. But I suspect that when 3.x dict.keys() was backported to 2.7.0, no one thought to update set, whereas the backported key view code already had the comparison. The