Horrible way of mixing itemgetter and attrgetter that I used once

itemattrgeter_compositon.py

"""
Of course, this is not real code apart from the core functionality
"""
from __future__ import unicode_literals
from functools import reduce as functools_reduce
from operator import attrgetter, itemgetter


class DummyItem:
    def __init__(self):
        self.other_item = {'title': "whatever, it works"}

    def __str__(self):
        return "<other_item title='{}'/>".format(self.other_item['title'])


class DummyResponse:
    def __init__(self):
        self.item = DummyItem()

    def __str__(self):
        return "<item>\n\t{}\n</item>".format(self.item)


def compose(*functions):
    return functools_reduce(lambda f, g: lambda x: f(g(x)), functions, lambda x: x)


data_checkers = [
    {
        "func": lambda x: x.startswith('whatever'),
        "tag": 'item.other_item',
        'attribute': 'title',
    },
]
response = DummyResponse()
print(response)
for checker in data_checkers:
    itemattrgetter = compose(
        itemgetter(checker['attribute']),
        attrgetter(checker['tag'])
    )
    assert checker['func'](itemattrgetter(response))