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- song_library = [("Phantom of the opera", "Sarah Brightman"),
- ("Knocking on heaven's door", "Guns N' Roses"),
- ("Captain Nemo", "Sarah Brightman"),
- ("Patterns in the ivy", "Opeth"),
- ("November rain", "Guns N' Roses"),
- ("Beautiful", "Sarah Brightman"),
- ("Mal's song", "Vixy and Tony")]
-
- artists = set()
-
- for song, artist in song_library:
- artists.add(artist)
-
- print(artists)
-
- for artist in artists:
- print("{} plays good music".format(artist))
-
- alpabetical = list(artists)
- alpabetical.sort()
- print(alpabetical)
-
- my_artists = artists
- auburns_artists = {"Nickelback", "Guns N' Roses", "Savage Garden"}
-
- print("All: {}".format(my_artists.union(auburns_artists)))
- print("Both: {}".format(my_artists.intersection(auburns_artists)))
- print("Either but not both: {}".format(my_artists.symmetric_difference(auburns_artists)))
-
- bands = {"Guns N' Roses", "Opeth"}
-
- print("my_artists is to bands:")
- print("issuperset: {}".format(my_artists.issuperset(bands)))
- print("issubset: {}".format(my_artists.issubset(bands)))
- print("difference: {}".format(my_artists.difference(bands)))
- print("*" * 20)
- print("issuperset: {}".format(bands.issuperset(my_artists)))
- print("issubset: {}".format(bands.issubset(my_artists)))
- print("difference: {}".format(bands.difference(my_artists)))
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