We all love operator.itemgetter, wouldn't it be cool if you can just do itemgetter("a.b", "a.c"). This works great on nested dictionaries, not so great with sequences.

nested_itemgetter.py

class nested_itemgetter:
    def __init__(self, item, *items):
        if not items:
            def func(obj):
                steps = item.split(".")
                for step in steps:
                    obj = obj[step]
                return obj
            self._call = func
        else:
            items = (item,) + items
            def func(obj):
                rval = []
                for _item in items:
                    steps = _item.split(".")
                    for step in steps:
                        obj = obj[step]
                    rval.append(obj)
                return tuple(rval)
            self._call = func