Hi, this question is from The Practice of Computing Using Python (3rd Edition) I

Question

Hi, this question is from The Practice of Computing Using Python (3rd Edition)

It is in Chapter 9 Problem 2pp

We have to organize our itunes library, we put our metadata from itunes into a text file

a) Read the metadata from a file into a dictionary

b)Loops to repeatedly prompt for

i)Name: list all songs by the specified artist

ii)Album: list all songs on the specified album

iii) Genre: list all songs in a specified genre

iv)Add: add a song

v)Delete: delete a specified song(specify its name)

vi) Popular: find the artist with the most songs in your collection

vii)Longest: find the longest song in your collection and print its metadata

Thankyou!

Explanation / Answer

from pyItunes.Song import Song from pyItunes.Playlist import Playlist import time import plistlib from six.moves.urllib import parse as urlparse from six import PY2 import urllib import logging logger = logging.getLogger(__name__) try: import xspf xspfAvailable = True except ImportError: xspfAvailable = False pass class Library: def __init__(self,itunesxml,musicPathXML=None,musicPathSystem=None,filesOnly=False): #musicPathXML and musicPathSystem will do path conversion for when xml is being processed on different OS then iTunes self.musicPathXML = musicPathXML self.musicPathSystem = musicPathSystem self.filesOnly = filesOnly if type(itunesxml) == str: self.il = plistlib.readPlist(itunesxml) #Much better support of xml special characters self.legacymode = False self.songs = {} else: self.il = {} self.il['Tracks'] = itunesxml self.legacymode = True self.songs = [] self.getSongs() def getSongs(self): format = "%Y-%m-%d %H:%M:%S" for trackid,attributes in self.il['Tracks'].items(): s = Song() s.name = attributes.get('Name') # Support classical music naming (Work+Movement Number+Movement Name) since iTunes 12.5 s.work = attributes.get('Work') s.movement_number = attributes.get('Movement Number') s.movement_count = attributes.get('Movement Count') s.movement_name = attributes.get('Movement Name') s.track_id = int(attributes.get('Track ID')) s.artist = attributes.get('Artist') s.album_artist = attributes.get('Album Artist') s.composer = attributes.get('Composer') s.album = attributes.get('Album') s.genre = attributes.get('Genre') s.kind = attributes.get('Kind') if attributes.get('Size'): s.size = int(attributes.get('Size')) s.total_time = attributes.get('Total Time') s.track_number = attributes.get('Track Number') if attributes.get('Track Count'): s.track_count = int(attributes.get('Track Count')) if attributes.get('Disc Number'): s.disc_number = int(attributes.get('Disc Number')) if attributes.get('Disc Count'): s.disc_count = int(attributes.get('Disc Count')) if attributes.get('Year'): s.year = int(attributes.get('Year')) if attributes.get('Date Modified'): s.date_modified = time.strptime(str(attributes.get('Date Modified')),format) if attributes.get('Date Added'): s.date_added = time.strptime(str(attributes.get('Date Added')),format) if attributes.get('Bit Rate'): s.bit_rate = int(attributes.get('Bit Rate')) if attributes.get('Sample Rate'): s.sample_rate = int(attributes.get('Sample Rate')) s.comments = attributes.get("Comments") if attributes.get('Rating'): s.rating = int(attributes.get('Rating')) s.rating_computed = 'Rating Computed' in attributes if attributes.get('Play Count'): s.play_count = int(attributes.get('Play Count')) if attributes.get('Album Rating'): s.album_rating = attributes.get('Album Rating') if attributes.get('Album Rating Computed'): s.album_rating_computed = attributes.get('Album Rating Computed') if attributes.get('Persistent ID'): s.persistent_id = attributes.get('Persistent ID') if attributes.get('Location'): s.location_escaped = attributes.get('Location') s.location = s.location_escaped s.location = urlparse.unquote(urlparse.urlparse(attributes.get('Location')).path[1:]) s.location = s.location.decode('utf-8') if PY2 else s.location # fixes bug #19 if ( self.musicPathXML is not None and self.musicPathSystem is not None ): s.location = s.location.replace(self.musicPathXML,self.musicPathSystem) s.compilation = 'Compilation' in attributes if attributes.get('Play Date UTC'): s.lastplayed = time.strptime(str(attributes.get('Play Date UTC')),format) if attributes.get('Skip Count'): s.skip_count = int(attributes.get('Skip Count')) if attributes.get('Skip Date'): s.skip_date = time.strptime(str(attributes.get('Skip Date')),format) if attributes.get('Total Time'): s.length = int(attributes.get('Total Time')) if attributes.get('Track Type'): s.track_type = attributes.get('Track Type') if attributes.get('Podcast'): s.podcast = attributes.get('Podcast') if attributes.get('Movie'): s.movie = attributes.get('Movie') if attributes.get('Has Video'): s.has_video = attributes.get('Has Video') if attributes.get('Grouping'): s.grouping = attributes.get('Grouping') if self.filesOnly==True and attributes.get('Track Type') == 'File': if self.legacymode: self.songs.append(s) else: self.songs[int(trackid)] = s elif self.filesOnly==False: if self.legacymode: self.songs.append(s) else: self.songs[int(trackid)] = s def getPlaylistNames(self,ignoreList=("Library","Music","Movies","TV Shows","Purchased","iTunes DJ","Podcasts")): if (self.legacymode): logger.info("getPlaylistNames is disabled in legacy mode.") return [] else: playlists = [] for playlist in self.il['Playlists']: if playlist['Name'] not in ignoreList: playlists.append(playlist['Name']) return playlists def getPlaylist(self,playlistName): if (self.legacymode): logger.info("getPlaylist is disabled in legacy mode.") return Playlist(playlistName) else: for playlist in self.il['Playlists']: if playlist['Name'] == playlistName: #id playlist_id track_num url title album artist length uniqueid p = Playlist(playlistName) p.is_folder = True if 'Folder' in playlist and playlist['Folder'] == True else False if 'Playlist Persistent ID' in playlist: p.playlist_persistent_id = playlist['Playlist Persistent ID'] if 'Parent Persistent ID' in playlist: p.parent_persistent_id = playlist['Parent Persistent ID'] tracknum=1 #Make sure playlist was not empty if 'Playlist Items' in playlist: for track in playlist['Playlist Items']: id=int(track['Track ID']) t = self.songs[id] t.playlist_order = tracknum tracknum+=1 p.tracks.append(t) return p def getPlaylistxspf(self,playlistName): global xspfAvailable if ( xspfAvailable ): x = xspf.Xspf() for playlist in self.il['Playlists']: if playlist['Name'] == playlistName: x.title = playlistName x.info = "" for track in playlist['Playlist Items']: id=int(track['Track ID']) x.add_track(title=self.songs[id].name, creator="",location=self.songs[id].location) return x.toXml() else: logger.warning("xspf library missing, go to https://github.com/alastair/xspf to install.") return None

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.