Python track.Track类代码示例

    def add_track(self, loc, trackdb):
        track = trackdb.get_track_by_loc(loc)
        if not track:
            track = Track(loc)
            respone = trackdb.add_track_from_trackobj(track)
            if not respone:
                return False
        tr_album = track.get_tag_raw('album', True)
        tr_albumartist = track.get_tag_raw('albumartist', True)
        if tr_albumartist == u'':
            tr_albumartist = track.get_tag_raw('artist', True)
        album = self.get_album_from_info(tr_album, tr_albumartist)
        if not album:
            # create new album
            album = Album(tr_album, tr_albumartist)
            self.__albums[(tr_album, tr_albumartist)] = album
        album.unchecked_add_song(track)
        self.__total_duration += track.get_tag_raw('__length')

        # cover = coverdb.get_cover(tr_album, tr_albumartist)
        # if not cover:
        #     tr_cover = track.get_tag_disk('cover')
        #     if tr_cover:
        #         coverdb.add_cover(tr_album, tr_albumartist, tr_cover)
        return track

	def loadTrack(self, trackfilename, track_id, flight_start):
		#trackflilename does not include the path, it's only name and extesion
		#track = open("./Flight1.txt", "r")
		track = Track(track_id)
		cont = 0
		with open(self.scenariosfolder + "/" + self.scenarioName + "/" + trackfilename, "r") as trackfile:
			for line in trackfile:
				
				if (not (line.startswith('#') or line.startswith('/'))) and len(line)>30:
				#if cont >= 4 and len(line)>30:
					parts = line.split()
					timestamp = parts[0]
					lat = float(parts[1])
					lon = float(parts[2])
					altitude = float(parts[3])
					heading = float(parts[6])
					v_x = float(parts[8])
					v_y = float(parts[10])
					v_z = float(parts[9])
					pitch = float(parts[4])
					bank = float(parts[5])
					onground = int(parts[7])
					airspeed = float(parts[19])
	
					track.addStep(timestamp, lat, lon, altitude, v_x, v_y, v_z, heading, pitch, bank, onground, airspeed)
					#track.addStep(timestamp, lat, lon, altitude, v_x, v_y, v_z, heading, pitch, bank)
					#cherrypy.log("%s,%s,%s,%s,%s,%s,%s,%s"%(timestamp, lat, lon, altitude, v_x, v_y, v_z, heading),context="EXPORT,")

				cont += 1
				
		track.setStart(flight_start)
		return track

def initthread(mwc, mc):
    library = mwc.library
    mwc.status_msg("Initializing..")
    wc = Webclient()
    wc.login(config.user, config.password)
    devices = wc.get_registered_devices()

    mwc.status_msg("Retrieving usable device ID..")
    for dev in devices:
        if dev["type"] == "PHONE":
            # strip 0x if present
            config.devid = dev["id"][2:] if dev["id"].startswith("0x") else dev["id"]
            print("Found a usable device id: " + config.devid)
            break
    else:
        md = Gtk.MessageDialog(parent=mwc.ui, buttons=Gtk.ButtonsType.OK, message_type=Gtk.MessageType.ERROR, message_format="Could not find a usable device id. Please run the Google Play Music app at least once on your phone.")
        GLib.idle_add(modal_dialog_func, md)

    mc.login(config.user, config.password)
    player = Player(mc, config.devid)
    mwc.setplayer(player)

    def getalbumart(structure):
        if "albumArtRef" in structure:
            a = structure["albumArtRef"]
            for entry in a:
                if "url" in entry:
                    return entry["url"]
        return None

    mwc.status_msg("Retrieving library..")
    songs = mc.get_all_songs()
    for song in songs:
        track = Track(song["id"], song["title"], song["artist"], song["album"],
                      song["trackNumber"] if "trackNumber" in song else 0)
        track.albumarturl = getalbumart(song)
        library.add_track(track)

    mwc.status_msg("Retrieving playlists..")
    playlists = mc.get_all_user_playlist_contents()


    for x in playlists:
        tracks = []
        for t in x["tracks"]:
            if t["trackId"].startswith("T"): # all access track
                trackEntry = t["track"]
                track = Track(t["trackId"], trackEntry["title"], trackEntry["artist"], trackEntry["album"], trackEntry["trackNumber"])
                track.albumarturl = getalbumart(trackEntry)
                tracks.append(track)

            else:
                libtrack = library.find_track(t["trackId"])
                if libtrack is not None:
                    tracks.append(libtrack)
        library.add_list(Playlist(x["name"], tracks))

    mwc.status_msg("Idle")

 def row_to_entity(row):
     spot_entity = Spot()
     spot_entity.id = row.id
     spot_entity.name = row.name
     spot_entity.position = GeoPoint.row_to_object(row.position)
     spot_entity.tags = row.tags
     spot_entity.tracks_current = [Track.row_to_object(track_row) for track_row in row.tracks_current]
     spot_entity.tracks_old = [Track.row_to_object(track_row) for track_row in row.tracks_old]
     return spot_entity

    def __init__(self, fn, name="Song name", cache_dir=None,
                 refresh_cache=False, labels=None, labels_in_file=False):
        self._analysis = None
        self._checksum = None
        self.refresh_cache = refresh_cache
        self.cache_dir = cache_dir

        Track.__init__(self, fn, name, labels=labels,
                       labels_in_file=labels_in_file)

    def filter(self, dt, z, R):

        associated = [track.filter(dt, z, R) for track in self.tracks]

        if not any(associated):

            new_track = Track(filter_model=self.filter_factory())
            new_track.filter(dt, z, R)

            self.tracks.append(new_track)

    def parse_response(self, response_json):
        playlist = []

        # used to get rid of duplicate tracks in same album
        album_set = Set()
        parsed_json = json.loads(response_json)

        # first check if the json can be correctly parsed
        if not 'tracks' in parsed_json:
            return all_tracks

        json_tracks = parsed_json['tracks']
        for json_track in json_tracks:
            track = Track()
            curTrackMap = {}
            album = json_track['album']['name'].lower()
            if album in album_set:
                continue
            album_set.add(album)
            track.set_album(album)
            track.set_name(json_track['name'].lower())
            artists = json_track['artists']
            artists_name = []
            for artist in artists:
                artists_name.append(artist['name'].lower())
            track.set_artists(artists_name)
            track.set_length(json_track['length'])
            playlist.append(track)
        return playlist 

    def get_track(provider_id):
        t = Track()
        try:
            ######MediaNet######
            # reqUrl = 'http://ie-api.mndigital.com?method=track.get&format=json&'\
            #     + urllib.urlencode({'mnetid': provider_id})\
            #     + '&ApiKey=%s' % MusicProvider._mnDigitalIntegrationAPIKey
            reqUrl = "http://itunes.apple.com/lookup?" + urllib.urlencode({"id": provider_id})

            # track_json = common.get_json(reqUrl)["Track"]
            track_json = common.get_json(reqUrl)["results"][0]

            t.provider_id = provider_id
            t.length_seconds = 0
            t.url = ""

            # t.artist = track_json["Artist"]["Name"]
            # t.title = track_json["Title"]
            # t.length_friendly = track_json["Duration"]
            # t.album = track_json["Album"]["Title"]
            # t.art_url = track_json["Album"]["Images"]["Album150x150"]

            t.artist = track_json["artistName"]
            t.title = track_json["trackName"]
            t.length_friendly = ""
            t.album = track_json["collectionName"]
            t.art_url = track_json["artworkUrl100"]

        except Exception:
            pass
        return t

	def play(self, position = 0, onError = None):
		if len(self.tracks) > 0 and len(self.tracks) > position:
			self.position = position
			if onError == None:
				self.currentTrack = Track(self.tracks[self.position])
			else:
				self.currentTrack = Track(self.tracks[self.position], onError)
			self.currentTrack.setVolume(self.volume)
			self.currentTrack.play()
		else:
			raise IndexError('Wrong track position')

 def index(self, path):
     for top, dirnames, filenames in os.walk(path):
         for filename in filenames:
             if filename.endswith('.mp3'):
                 full_path = os.path.join(top, filename);
                 f = tagpy.FileRef(full_path)
                 t = Track("file://" + full_path)
                 t.title = f.tag().title
                 t.artist = f.tag().artist
                 t.album = f.tag().album
                 a = f.audioProperties()
                 t.duration = a.length * 1000 # to msec
                 self.add_track(t)

def output_aligns(outfile, aligns, track_name=None, contigs=None, append=False, 
                  header=True, genome=None, refseq=None, color=None, by_fasta=False, annodir=None):
    """Outputs alignments to file"""
    ext = os.path.splitext(outfile)[1]
    if append:
        out = open(outfile, 'a')
    else:
        out = open(outfile, 'w')
	
    # desc == name
    track_desc = track_name
    if aligns:
        if track_name and genome:
            Track.ucsc_targets(genome, aligns, annodir)
        
        if header and track_name:
	    header_line = "track name=\"%s\" description=\"%s\" visibility=%d itemRgb=\"On\"" % (track_name, track_desc, 3)
	    if color is not None:
		header_line += ' color=\"%s\"' % (color)
            out.write("%s\n" % (header_line))

        # map contig to contig name
        contig_dict = None
        if contigs:
            contig_dict = dict((contig.num, contig) for contig in contigs)
	    
	# sort alignments by contig order in original input fasta file
	if by_fasta:
	    count = 0
	    ordered = {}
	    for contig in contigs:
		ordered[contig.num] = count
		count += 1
	    aligns.sort(lambda x,y: ordered[x.query] - ordered[y.query])
            
        for align in aligns:
            contig = align.query
            if ' ' in contig:
                contig = align.query.split(" ")[0]
            
            if contig_dict and contig_dict.has_key(contig):
                align.contig = contig_dict[contig]
                                
            if ext == ".gff":
                out.write(align.gff("exon"))

            elif ext == ".psl":
                out.write(align.psl(refseq=refseq, genome=genome))
                
    out.close()

class App(Tk):
    def __init__(self, ftimer):
        Tk.__init__(self)
          
        self.sats = Track()
        self.sats.load_local("data.txt")    # to be changed
        self.sats.add_satellite(7)          # achtung, hardcode
        
        menu = UserMenu(parent = self)
        self.config(menu = menu)
        self.title('SatKit Ground Tracking')

        self.timer = ftimer
        self.timer.callback_function = self.redraw
        self.time_speed = 1                 # normal speed
        
        self.var = IntVar()
        self.scale = Scale(self, variable = self.var, from_ = 1, to = 3600, 
                           orient = HORIZONTAL, showvalue=0, sliderlength=15,
                           length=400, command=self.set_time_speed)
        self.date = Label(self)
    def redraw(self):
        
        self.timer.set_speed(self.time_speed) # bad, should be improven,~event
        self.sats.update_satellites(self.time_speed * Time.TIMER_INTERVAL)
        #print self.time_speed 
        # recompute "current" time, later,,,
        self.date.config(text = str(self.timer.current_time)[0:21])
        self.date.grid(row = 0, column = 1)
        self.scale.grid(row = 0, column = 0)
        self.sats.anim.grid(row = 1, columnspan = 2)
        self.sats.draw() 

    def set_time_speed(self, secs):
        self.time_speed = int(secs)

    def get_track_row(self):
        row = self.db.fetchone()
        tid = row['track_id']
        position = row['position']
        ptid = row['id']

        self.db.commit_statement('''select * from tracks where id = ?''', [row['track_id']])
        row = self.db.fetchone()
        del row['id']
        t = Track(**row)
        t.id = tid
        t.position = position
        t.ptid = ptid
        return t

    def get_track_row(self):
        row = self.db.fetchone()
        tid = row["track_id"]
        position = row["position"]
        ptid = row["id"]

        self.db.commit_statement("""select * from tracks where id = ?""", [row["track_id"]])
        row = self.db.fetchone()
        del row["id"]
        t = Track(**row)
        t.id = tid
        t.position = position
        t.ptid = ptid
        return t

class CyclopsEvolver(TournamentEvolver):
  def __init__(self, popSize, tournSize, nIters):
    super().__init__(popSize, tournSize, nIters)
    self.track = Track()
    self.simDuration = self.track.size * 4
    self.startSeed = random.random()

  def randomIndividual(self):
    nNeurons = 8
    return System(nNeurons)

  def mutated(self, system):
    return self.mutatedPartial(system, 1, 8)

  def mutatedPartial(self, system, mean, variance):
    sys = system.copy()
    #sys.trans += variance / 4 * numpy.random.randn(*sys.trans.shape)
    sys.trans *= mean + variance * numpy.random.randn(*sys.trans.shape)
    #sys.trans += 1/8 * numpy.random.randn(*sys.trans.shape)
    return sys

  def fitness(self, system):
    return sum(self.fitness1(system, self.startSeed + i) for i in range(64))

  def fitness1(self, system, seed):
    distances = []
    def distanceTracker(track):
      rawDist = track.bot.position - track.flag.position
      dist = min(rawDist % track.size, (-rawDist) % track.size)
      distances.append(dist)

    self.simulate(system, distanceTracker, seed)
    return -sum(d for d in distances[-self.track.size : ])

  def simulate(self, system, watcher, seed=None):
    # initialize conditions
    self.track.reset(seed)
    system.reset()
    # simulate
    for iteration in range(self.simDuration):
      self.track.step(system)
      watcher(self.track)

  def animate(self, system):
    frames = []
    def frameCapturer(track):
      frames.append(track.drawnState())
    self.simulate(system, frameCapturer)#, self.startSeed)
    return frames