[Python-ideas] Adding list.pluck()

Jerry Hill malaclypse2 at gmail.com
Sat Jun 2 01:16:37 CEST 2012

On Fri, Jun 1, 2012 at 5:48 PM, Cenk Altı <cenkalti at gmail.com> wrote:
> l.pluck('name') is more readable IMO.

That's not how the library you linked to works, as far as I can tell.
Based on the sample usage at
http://documentcloud.github.com/underscore/#pluck,  pluck is a
function taking an iterable of dictionaries and the key, so I think
the python equivalent is:

def pluck(iterable, key):
    return [item[key] for item in iterable]

stooges = [{'name' : 'moe', 'age' : 40},
           {'name' : 'larry', 'age' : 50},
           {'name' : 'curly', 'age' : 60}]

print (pluck(stooges, 'name'))

['moe', 'larry', 'curly']


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