Pythonic way for missing dict keys

genro giovanni.porcari at
Sat Jul 21 19:20:37 EDT 2007

On Jul 19, 6:29 am, Bruno Desthuilliers
<bdesth.quelquech... at> wrote:

> Myobject will be instanciated each time, yes.
> > and so if the initialization is expensive you
> > will probably see surprises.
> No "surprise" here, but it can indeed be suboptimal if instanciating
> myobject is costly.

What about this way ?

my_obj = my_dict.get(key) or my_dict.setdefault(key,myobject())


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