Update pickle_dataset.py
Update pickle_dataset.py
wkentaro/chainer,hvy/chainer,okuta/chainer,wkentaro/chainer,chainer/chainer,keisuke-umezawa/chainer,okuta/chainer,okuta/chainer,wkentaro/chainer,okuta/chainer,hvy/chainer,tkerola/chainer,keisuke-umezawa/chainer,pfnet/chainer,niboshi/chainer,wkentaro/chainer,niboshi/chainer,keisuke-umezawa/chainer,chainer/chainer,chainer/chainer,hvy/chainer,niboshi/chainer,hvy/chainer,keisuke-umezawa/chainer,chainer/chainer,niboshi/chainer