dict literals vs dict(**kwds)

George Sakkis george.sakkis at gmail.com
Tue May 23 18:49:52 EDT 2006

Bruno Desthuilliers wrote:

> George Sakkis a écrit :
> > Although I consider dict(**kwds) as one of the few unfortunate design
> > choices in python since it prevents the future addition of useful
> > keyword arguments (e.g a default value or an orderby function), I've
> > been finding myself lately using it sometimes instead of dict literals,
> > for no particular reason. Is there any coding style consensus on when
> > should dict literals be preferred over dict(**kwds) and vice versa ?
> using dict literals means that you'll always have a builtin dict - you
> cannot dynamically select another dict-like class. OTHO, you can only
> use valid python identifiers as keys with dict(**kw).

This is all good but doesn't answer my original question: under which
circumstances (if any) would  {'name':'Mike, 'age':23} be preferred
over dict(name='Mike', age=23) and vice versa, or if it's just a matter
of taste, similar to using single vs double quote for string literals
(when both are valid of course).


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