RetroSearch Browse

Thu Nov 15 05:19:31 CET 2012 · https://mail.python.org/pipermail/python-dev/2012-November/122734.html

Zitat von Chris Withers <chris at simplistix.co.uk>:

> On 14/11/2012 21:40, Greg Ewing wrote:
>> * If the compiler were allowed to recognise builtins, it could
>> turn dict(a = 1, b = 2) into {'a':1, 'b':2} automatically.
>
> That would be my naive suggestion, I am prepared to be shot down in  
> flames ;-)

In general, special-casing builtins in the compiler is not possible
in Python. You cannot know statically that 'dict' really refers to
the builtin. Something may shadow the name at run-time, making dict
refer to some other callable.

Regards,
Martin

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://mail.python.org/pipermail/python-dev/2012-November/122734.html below:

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