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# Dictionary Comprehensions
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from collections import namedtuple
Book = namedtuple("Book", "author title genre")
books = [
        Book("Pratchett", "Nightwatch", "fantasy"),
        Book("Pratchett", "Thief Of Time", "fantasy"),
        Book("Le Guin", "The Dispossessed", "scifi"),
        Book("Le Guin", "A Wizard Of Earthsea", "fantasy"),
        Book("Turner", "The Thief", "fantasy"),
        Book("Phillips", "Preston Diamond", "western"),
        Book("Phillips", "Twice Upon A Time", "scifi"),
        ]

fantasy_titles = {b.title: b for b in books if b.genre == 'fantasy'}
print(" ")
print(fantasy_titles)