[Python-Dev] dict(keys, values) (original) (raw)
George Sakkis george.sakkis at gmail.com
Thu Feb 1 10:48:21 CET 2007
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On 2/1/07, Brian Quinlan <brian at sweetapp.com> wrote:
George Sakkis wrote: > Perhaps this has been brought up in the past but I couldn't find it in > the archives: far too often I use the idiom dict(zip(keys,values)), or > the same with izip. How does letting dict take two positional > arguments sound ? > > Pros: > - Pretty obvious semantics, no mental overhead to learn and remember it. > - More concise (especially if one imports itertools just to use izip). > - At least as efficient as the current alternatives. > - Backwards compatible. > > Cons: - Yet Another Way To Do It - Marginal benefit
Also note that the keyword variant is longer than the zip variant e.g. dict(zip(keys, values)) dict(keys=keys, values=values) and the relationship between the keys and values seems far less obvious to me in the keyword variant. Cheers, Brian
Um, you do realize that dict(keys=keys, values=values) is already valid and quite different from dict(zip(keys, values)), don't you ? :)
George
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