new_contents: import os
  
  def parse(fileName, path):
      tmpSplit = os.path.splitext(fileName)
      return tmpSplit[0], tmpSplit[1], path
  
  def getName(o):
      return o[0]
  
  def getExt(o):
      return o[1]
  
  def getPath(o):
      return o[2]
  
  def getFull(o):
      return getPath(o)+"/"+getName(o)+getExt(o)
  
  def getDirName(old):
      dirName=old+"_Converted_mp3_files/"
      if not os.path.exists(dirName):
  	os.makedirs(dirName)
      return dirName
  
  def getFullFromMp4(mp4):
      return getDirName(mp4[2])+mp4[0]+".mp3"
  
subject: Create parser.py