How to extract from a list of objects a list of specific attribute?

Solution 1:

A list comprehension would work just fine:

[o.my_attr for o in my_list]

But there is a combination of built-in functions, since you ask :-)

from operator import attrgetter
map(attrgetter('my_attr'), my_list)

Solution 2:

are you looking for something like this?

[o.specific_attr for o in objects]

Solution 3:

The first thing that came to my mind:

attrList = map(lambda x: x.attr, objectList)

Solution 4:

Assuming you want field b for the objects in a list named objects do this:

[o.b for o in objects]