问题：通过pip安装PyTorch 0.4.0成功，但是import时报错。
import torch
File "D:\Python\Python36\lib\site-packages\torch\__init__.py", line 78, in <module>
from torch._C import *
ImportError: DLL load failed: 找不到指定的模块。
解决：
- put the dll files in Library\bin into a dir
- append the path of it to the environment variable PATH.
参考：
from torch._C import * (ImportError: DLL load failed: The specified module could not be found.
