Author methane
Recipients jdemeyer, larry, methane, python-dev, rhettinger, vstinner
Date 2019-07-09.02:46:31
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
> Changing dict.update() calling convention may save a few nanoseconds on d1.update(d2) call, but it will make d1.update(**d2) way slower with a complexity of O(n): d2 must be converted to 2 lists (kwnames and args) and then a new dict should be created.

But who/why use d1.update(**d2)?
In case of dict(), dict(d1, **d2) was idiom to merge two dicts.
But I don't know any practical usage of d1.update(**d2).  d1.update(d2) should be preferred.
Date User Action Args
2019-07-09 02:46:32methanesetrecipients: + methane, rhettinger, vstinner, larry, python-dev, jdemeyer
2019-07-09 02:46:32methanesetmessageid: <>
2019-07-09 02:46:32methanelinkissue29312 messages
2019-07-09 02:46:31methanecreate