analyze_mp3.py

#!/usr/bin/env python3

import sys


def get_mp3_tag(fname):
    try:
        f = open(sys.argv[1], 'rb')
    except Exception as e:
        return(e, 1)

    f.seek(-128, 2)
    data = f.read(128).decode()
    f.close()

    if data.startswith('TAG'):
        song = data[3:33].replace(chr(0), '')
        artist = data[33:63].replace(chr(0), '')
        return ({'Song':song, 'Artist': artist}, 0)

if __name__ == '__main__':
    if len(sys.argv) != 2:
        print('Invalid parameters passed')
        print('Usage:')
        print('%s <mp3 file>' % sys.argv[0])
        sys.exit(1)
    tmp = get_mp3_tag(sys.argv[1])
    if not tmp[1]:
        for x in tmp[0]:
            print('%s: %s' % (x, tmp[0][x]))
    else:
        print(tmp[0])