from chainerrl.misc import env_modifiers  # NOQA
from chainerrl.misc.random_seed import set_random_seed  # NOQA

from chainerrl.misc.batch_states import batch_states  # NOQA
from chainerrl.misc import env_modifiers  # NOQA
from chainerrl.misc.random_seed import set_random_seed  # NOQA

Add batch_states under chainer.misc