Message347515
> 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. |
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Date |
User |
Action |
Args |
2019-07-09 02:46:32 | methane | set | recipients:
+ methane, rhettinger, vstinner, larry, python-dev, jdemeyer |
2019-07-09 02:46:32 | methane | set | messageid: <1562640392.03.0.102624176701.issue29312@roundup.psfhosted.org> |
2019-07-09 02:46:32 | methane | link | issue29312 messages |
2019-07-09 02:46:31 | methane | create | |
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