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history.py

add(song)

Add song to history.

Source code in mps_youtube/history.py 
def add(song):
    """ Add song to history. """
    if not g.userhist.get('history'):
        g.userhist['history'] = Playlist('history')

    g.userhist['history'].songs.append(song)

    save()

load()

Open history. Called once on script invocation.

Source code in mps_youtube/history.py 
def load():
    """ Open history. Called once on script invocation. """
    _convert_to_m3u()
    try:
        g.userhist['history'] = read_m3u(g.HISTFILE)

    except FileNotFoundError:
        # no playlist found, create a blank one
        if not os.path.isfile(g.HISTFILE):
            g.userhist = {}
            save()

save()

Save history. Called each time history is updated.

Source code in mps_youtube/history.py 
def save():
    """ Save history.  Called each time history is updated. """
    with open(g.HISTFILE, 'w') as hf:
        hf.write('#EXTM3U\n\n')
        if 'history' in g.userhist:
            for song in g.userhist['history'].songs:
                hf.write('#EXTINF:%d,%s\n' % (song.length, song.title))
                hf.write('https://www.youtube.com/watch?v=%s\n' % song.ytid)

    dbg(c.r + "History saved\n---" + c.w)