message: Fixes len() of unsized object error in DataFeeder due to incorrect object type
diff: @@ -364,7 +364,7 @@ class DataFeeder(object):
  num_samples = list(self._x.values())[0].shape[
  0] if x_is_dict else self._x.shape[0]
  if self._shuffle:
  - self.indices = self.random_state.permutation(num_samples)
  + self.indices = self.random_state.permutation(num_samples.value)
  else:
  self.indices = np.array(range(num_samples))
  self.offset = 0
  