Compare wave files in two folders for length. Shows which files in second folder are closest to the length of files in first folder

wavecmp

#!/usr/bin/env python2

import os, sys
import contextlib
import wave

def main():
  folders = []
  dir1, dir2 = parseArgs(sys.argv)
  print dir1, dir2
  for folder in (dir1, dir2):
    filesInFolder = []
    for r,d,f in os.walk(folder):
      for files in f:
        if files.endswith(".wav"):
          fdata =  ( getDuration(os.path.join(r,files)), files )
          filesInFolder.append(fdata)
    folders.append(sorted(filesInFolder))
  printBoth(folders)

def parseArgs(argv):
  if len(argv) < 3:
    sys.exit('Usage: %s folder1 folder2' % argv[0])
  return argv[1], argv[2]

def getLonger(folders):
  """Return longest list"""
  folder = ""
  if len(folders[0]) >= len(folders[1]):
    return folders[0], folders[1]
  if len(folders[1]) > len(folders[0]):
    return folders[1], folders[0]

def printBoth(folders):
  longer, shorter = getLonger(folders)
  for i in longer:
  # use min get min distance between values
    value, name = min(shorter, key=lambda x:abs(x[0]-i[0]))
    print "%s: %d, %s: %d" % ( i[1], i[0], name, value) 


def getDuration(fname):
  with contextlib.closing(wave.open(fname,'r')) as f:
    frames=f.getnframes()
    rate=f.getframerate()
    duration=frames/float(rate)
    return(duration)

if __name__ == "__main__":
    main()