random.shuffle doesn't work to shuffled_index, which affect the training results

[tsaichasel]

there are some problem if using the code follow，because the function random.shuffle does not work to shuffled_index, which affect the training results.

  shuffled_index = range(len(filenames))
  random.seed(12345)
  random.shuffle(list(range(len(shuffled_index))))

I modify the code follow, it does work：

  shuffled_index = list(range(len(filenames)))
  random.seed(12345)
  random.shuffle(shuffled_index)

[rjbruin]

Quite an important fix, this! Training with samples entirely in order simply doesn't work.