[Python-Dev] performance of {} versus dict()

[Brian Curtin]

On Wed, Nov 14, 2012 at 3:20 PM, MRAB <python at mrabarnett.plus.com> wrote:
> On 2012-11-14 20:53, Mark Adam wrote:
>>
>> On Wed, Nov 14, 2012 at 1:37 PM, Xavier Morel <catch-all at masklinn.net>
>> wrote:
>>>
>>> On 2012-11-14, at 19:54 , Mark Adam wrote:
>>>>
>>>>
>>>> Merging of two dicts is done with dict.update.
>>>
>>>
>>> No, dict.update merges one dict (or two) into a third one.
>>
>>
>> No.  I think you need to read the docs.
>>
>>>> How do you do it on
>>>> initialization?  This doesn't make sense.
>>>
>>>
>>> dict(d1, **d2)
>>
>>
>> That's not valid syntax is it?
>>
> No.
>
> You can have dict(d1) and dict(**d2), but not dict(d1, **d2).

Yes you can.