On Wed, Aug 2, 2017 at 11:49 AM, Chris Angelico <ros...@gmail.com> wrote:
> On Thu, Aug 3, 2017 at 3:21 AM, Ian Pilcher <arequip...@gmail.com> wrote:
>> Given a list of objects that all have a particular attribute, is there
>> a simple way to get a list of those attributes?
>>
>> In other words:
>>
>> class Foo(object):
>> def __init__(self, name):
>> self.name = name
>>
>> foolist = [ Foo('a'), Foo('b'), Foo('c') ]
>>
>> namelist = []
>> for foo in foolist:
>> namelist.append(foo.name)
>>
>> Is there a way to avoid the for loop and create 'namelist' with a single
>> expression?
>
> You can't eliminate the loop
Well, you can do this:
namelist = list(map(operator.attrgetter('name'), foolist))
But use what Chris and Terry suggested; it's cleaner.
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