last_ind([0, 4, 19, 34, 50, -9, 2]) ➞ 2

last_ind("The quick brown fox jumped over the lazy dog") ➞ "g"

last_ind([]) ➞ None

self.assertEqual(last_ind([0, 4, 19, 34, 50, -9, 2]), 2)
self.assertEqual(last_ind("The quick brown fox jumped over the lazy dog"), "g")
self.assertEqual(last_ind([]), None)
self.assertEqual(last_ind([True, False, False, True]), True)
self.assertEqual(last_ind([(5, 0), (0, 5, 6, 7), (3, 5, 67, 7), (0, -9, 3, 45, 5)]), (0, -9, 3, 45, 5))
self.assertEqual(last_ind("Python is a great programming langauge."), ".")
self.assertEqual(last_ind(["H", "E", "L", "L", "O"]), "O")
self.assertEqual(last_ind([{"name": "batman"}, {"kids": "none"}, {"parents": "also none"}]), {"parents": "also none"})

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