[Python] Copy directories

copydir.py

def copydir(src,dst):
  if not os.path.exists(dst):
    os.mkdir(dst)
  for f in os.listdir(src):
    path = pjoin(src,f)
    if os.path.isfile(path):
      dst_path = os.path.join(dst,f)
      # if the files modify time is the same, do not copy
      if not os.path.exists(dst_path) or os.path.getmtime(path) != os.path.getmtime(dst_path):
        # use 'copy2' to keep file metadate
        shutil.copy2(path,dst_path)
    else:
      # isdir
      copydir(path, pjoin(dst,f), minify)