Way for see if dict has a key

[looping]

Michele Petrazzo wrote:
> Bruno Desthuilliers wrote:
> >> but what the better
> >
> > Depends on the context.
> >
>
> If know only one context: see if the key are into the dict... What other
> context do you know?
>
> Michele

Why do you want to do that ?

if key in dict:
  value = dict[key]
else:
  value = None

could be write:

try:
  value = dict[key]
except KeyError:
  value = None

so depends of the context...