calliope.diff

Functions

creator_equal(a, b)	True if creator (artist) of a and b are the same.
album_equal(a, b)	True if a and b represent the same album (release group).
song_equal(a, b)	True if a and b represent the same song (recording).
track_equal(a, b)	True if a and b represent the same track on the same album.
diff(playlist_a, playlist_b[, equal_function])	Calculate difference between two playlists.

Package Contents

calliope.diff.creator_equal(a, b)

True if creator (artist) of a and b are the same.

Considers properties:

• musicbrainz.artist_id

• creator (case insensitive)

Parameters:

• a (calliope.playlist.Item)

• b (calliope.playlist.Item)

calliope.diff.album_equal(a, b)

True if a and b represent the same album (release group).

Considers properties:

• musicbrainz.release_group_id

• musicbrainz.release_id

• album and creator (case insensitive)

Parameters:

• a (calliope.playlist.Item)

• b (calliope.playlist.Item)

calliope.diff.song_equal(a, b)

True if a and b represent the same song (recording).

Considers creator_equal(), plus these properties properties:

• identifier

• musicbrainz.recording_id

• title (case insensitive)

Parameters:

• a (calliope.playlist.Item)

• b (calliope.playlist.Item)

calliope.diff.track_equal(a, b)

True if a and b represent the same track on the same album.

Considers song_equal(), album_equal(), plus these properties:

• musicbrainz.track_id

• trackNum

Parameters:

• a (calliope.playlist.Item)

• b (calliope.playlist.Item)

calliope.diff.diff(playlist_a, playlist_b, equal_function=None)

Calculate difference between two playlists.

Playlists are sets of items. Two items are equal according to equal_function. This function calculates set difference between playlist_a and playlist_b, returning all items from playlist_a which do not have a counterpart in playlist_b.