[Tutor] Ok, take one step back and let you look

[Moshe Zadka]

On Thu, 30 Sep 1999, Michael P. Reilly wrote:

> >>> classify = {}
> >>> for item in inventory:
> ...   key = item.__class__
> ...   if classify.has_key(key):
> ...     classify[key] = classify[key] + 1
> ...   else:
> ...     classify[key] = 1

But a better idiom, both in clarity and efficiency, would be to simulate
Perl's hash semantics and use .get:

classify={}
for item in inventory:
	classify[item.__class__]=classify.get(item.__class__, 0)


--
Moshe Zadka <mzadka@geocities.com>. 
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