[Python-3000] A request to keep dict.setdefault() in 3.0 (original) (raw)
Guido van Rossum guido at python.org
Mon Jul 9 23:01:15 CEST 2007
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On 7/9/07, tav <tav at espians.com> wrote:
setdefault's ability to return current value is also a very useful functionality and has saved writing:
if key not in dict: value = dict[key] = value with the simpler: value = dict.setdefault(key, ) Is there a better way to do the above without .setdefault?
Those are not equivalent, as the form using setdefault() always evaluates while the other form only evaluates it when needed.
-- --Guido van Rossum (home page: http://www.python.org/~guido/)
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