Music Normalize Test | Python Fiddle

#!/usr/bin/python

from string import maketrans
import sys, getopt, os, re

def normalize(item):
    # The normalization actions listed below should be applied in the order listed
    # remove undesired punctuation (need to decide which and whether to substitute with '_' or similar)
    # remove extraneous white space, or, after the above,
    #   replace strings of more than one '_' with exactly one '_'

# Add your code between here

normalized_item = item.lower().replace('&', 'and')
    intab = '();/\ '
    outtab = "[],::_"
    trantab = maketrans(intab, outtab)
    normalized_item = normalized_item.translate(trantab, '"!?\'')
    normalized_item = re.sub('_+', '_', normalized_item)
    # normalized_item = re.sub('_+', '_', normalized_item)
    # and here
    return normalized_item

def normalize_all(a, e, s):
    print "\n\nartist: ", a, "\nevent:  ", e, "\nsong:   ", s
    na = normalize(a)
    # Now check for leading 'the ' and remove it, if found (just do this for artist name)
    ne = normalize(e)
    ns = normalize(s)
    return os.path.join(na, ne, ns)

def help():
    print sys.argv[0], " filename"
    print sys.argv[0], " -a 'artist name' -e 'event or album name' -s 'song name'"
    print "  if any of the above are omitted, 'unknown' is assumed,"
    print "  if all are omitted, internal test data are used"
    sys.exit(2)

def main(argv):
    try:
        artist = 'unknown'
        event = 'unknown'
        song = 'unknown'
        opts, args = getopt.getopt(argv,"a:e:hs:")
    except getopt.GetoptError:
        help()
    for opt, arg in opts:
        if opt == '-a':
            artist = arg
        elif opt == '-e':
            event = arg
        elif opt == '-s':
            song = arg
        elif opt == '-h':
            help()
        else:
            help()

if (artist == 'unknown' and event == 'unknown' and song == 'unknown'):
        path = normalize_all('The Rolling Stones', 'The Rolling Stones, Now!', '(I Can\'t Get No) Satisfaction')
        print "path:   ", path, "\ndesire:  rolling_stones/the_rolling_stones,_now/[i_cant_get_no]_satisfaction"
        path = normalize_all('The Rolling Stones', 'Through The Past, Darkly (Big Hits Vol. 2)', 'Jumpin\' Jack Flash')    
        print "path:   ", path, "\ndesire:  rolling_stones/through_the_past,_darkly_[big_hits_vol._2]/jumpin_jack_flash"
        path = normalize_all('Mott The Hoople', 'All The Young Dudes [Bonus Tracks]', 'All The Young Dudes [Bowie/Hunter vocal version]')
        print "path:   ", path, "\ndesire:  mott_the_hoople/all_the_young_dudes_[bonus_tracks]/all_the_young_dudes_[bowie:hunter_vocal_version]"
        path = normalize_all('Motley Crue', 'Dr. Feelgood', 'Autographs & Apologies') 
        print "path:   ", path, "\ndesire:  motley_crue/dr._feelgood/autographs_and_apologies"
        # Need to figure out how to declare (and pass) unicode (cut-n-paste Motley Crue from catalog file)
        path = normalize_all('Silly Testin\'  with many   "embedded" spaces', ' and leading spaces', 'And more stuff!!')
        print "path:   ", path, '\ndesire:  silly_testin_with_many_embedded_spaces/and_leading_spaces/and_more_stuff'

else:
        path = normalize_all(artist, event, song)
        print "path:   ", path, "\ndesire:  you decide if this is right!"

if __name__ == "__main__":
    main(sys.argv[1:])

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