fix for autopep8
fix for autopep8

jnishi/chainer,niboshi/chainer,jnishi/chainer,niboshi/chainer,chainer/chainer,keisuke-umezawa/chainer,keisuke-umezawa/chainer,keisuke-umezawa/chainer,okuta/chainer,hvy/chainer,keisuke-umezawa/chainer,chainer/chainer,wkentaro/chainer,hvy/chainer,cupy/cupy,rezoo/chainer,ktnyt/chainer,ysekky/chainer,wkentaro/chainer,kashif/chainer,tkerola/chainer,chainer/chainer,ktnyt/chainer,okuta/chainer,niboshi/chainer,kiyukuta/chainer,chainer/chainer,wkentaro/chainer,aonotas/chainer,delta2323/chainer,wkentaro/chainer,cupy/cupy,okuta/chainer,jnishi/chainer,ktnyt/chainer,pfnet/chainer,niboshi/chainer,cupy/cupy,hvy/chainer,hvy/chainer,cupy/cupy,okuta/chainer,jnishi/chainer,ronekko/chainer,ktnyt/chainer,anaruse/chainer