import os, sys
if len(sys.argv) != 2:
    print "Usage: python foobar.py <folder path>"
else:
    path = sys.argv[1]
    os.chdir(path)
    for f in os.listdir("."):
        if f.lower().endswith(".mp3"):
            n = ''.join(f.split('.')[:-1])+".txt"
            np = path+"\\"+n
            if not os.path.exists(np):
                open(np,'w').close()