Python PyTorch install tips

このエラーにピンときたらPyTorch Forumsへ．．．

import torchvision.transforms as transforms
Traceback (most recent call last):
File "", line 1, in
File "/home/hogehoge/anaconda3/envs/py36/lib/python3.6/site-packages/torchvision-0.1.8-py3.6.egg/torchvision/init.py", line 2, in
File "/home/hogehoge/anaconda3/envs/py36/lib/python3.6/site-packages/torchvision-0.1.8-py3.6.egg/torchvision/datasets/init.py", line 1, in
File "/home/hogehoge/anaconda3/envs/py36/lib/python3.6/site-packages/torchvision-0.1.8-py3.6.egg/torchvision/datasets/lsun.py", line 2, in
File "/home/hogehoge/anaconda3/envs/py36/lib/python3.6/site-packages/PIL/Image.py", line 56, in
from . import _imaging as core
ImportError: /home/hogehoge/anaconda3/envs/py36/lib/python3.6/site-packages/PIL/_imaging.cpython-36m-x86_64-linux-gnu.so: undefined symbol: PySlice_Unpack

とまあ，このエラーで長いこと苦しめられました．
私の環境は　
python 3.6
conda install pytorch torchvision -c soumith
で作成．

解決法はpython 3.5 に変えること．以上

$ conda create -n py35 python=3.5
$ conda activate py35
(py35)$ conda install pytorch torchvision -c soumith

で，とりあえずうまく行きます．以上