[Python-Dev] dict.addlist() (original) (raw)

Bob Ippolito bob at redivi.com
Tue Jan 20 09:26:39 EST 2004


On Jan 20, 2004, at 9:17 AM, Raymond Hettinger wrote:

Here is anidea to kick around:

Evolve and eventually replace dict.setdefault with a more specialized method that is clearer, cleaner, easier to use, and faster. d.addlist(k, v) would work like d.setdefault(k, []).append(v)

-1

There are other reasons to use setdefault. This one is pretty common though, but I think a more generic solution could be implemented.

Perhaps:

d.setdefault(k, factory=list).append(v) ?

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