I wonder which is faster? Turns out, neither, really.

getters.py

from random import randint
from operator import attrgetter, itemgetter
from contexttimer import Timer

class Lol(object):
    @property
    def test(self):
        return randint(1, 100)
        
    def __getitem__(self, x):
        return randint(1, 100)

def generated():
    return (Lol() for x in range(1, 50000))


def test_attrgetter():
    tester = attrgetter("test")
    for item in generated():
        tester(item)
        
def test_itemgetter():
    tester = itemgetter("test")
    for item in generated():
        tester(item)

def test_getattr():
    for item in generated():
        getattr(item, 'test')
        
def test_getitem():
    for item in generated():
        item['test']
        
def main():
    print("getattr")
    with Timer() as t:
        test_getattr()
    print(t.elapsed)
    print("attrgetter")
    with Timer() as t2:
        test_attrgetter()
    print(t2.elapsed)
    print("getitem")
    with Timer() as t3:
        test_getitem()
    print(t3.elapsed)
    print("itemgetter")
    with Timer() as t4:
        test_itemgetter()
    print(t4.elapsed)
        
if __name__ == "__main__":
    main()