Method to plot year histogram from iTunes playlist

plotYearHisto.py

def plotYearHisto(fileName):
    """
    Plot year histogram using XML playlist from iTunes.
    """
    plist = plistlib.readPlist(fileName)
    tracks = plist['Tracks']
    years = []
    for trackId, track in tracks.items():
        try:
            years.append(track['Year'])
        except:
            pass

    if years == []:
        print("Playlist file does not contain valid track year data.")
        return

    x = np.array(years)
    plt.plot()
    plt.hist(x, bins=20, color='midnightblue')
    plt.title('Song Year Histogram for %s' % fileName)
    plt.show()