[PYTHON] Install torch-scatter with PyTorch 1.7

environment

I made a note in a hurry because I succeeded in a hurry.

$ pip install torch-scatter -f https://pytorch-geometric.com/whl/torch-1.7.0.html
Looking in links: https://pytorch-geometric.com/whl/torch-1.7.0.html
Collecting torch-scatter
  Downloading https://pytorch-geometric.com/whl/torch-1.7.0/torch_scatter-2.0.5%2Bcu110-cp36-cp36m-win_amd64.whl (2.4
MB)
     |████████████████████████████████| 2.4 MB 544 kB/s
Installing collected packages: torch-scatter
Successfully installed torch-scatter-2.0.5

But when I try to move it fails

$ python natura/bin/pytorch_sample.py
Traceback (most recent call last):
  File "natura/bin/pytorch_sample.py", line 9, in <module>
    from torch_scatter import scatter_max
  File "C:\Users\dff40\.conda\envs\pytorch04gpu\lib\site-packages\torch_scatter\__init__.py", line 12, in <module>
    library, [osp.dirname(__file__)]).origin)
  File "C:\Users\dff40\.conda\envs\pytorch04gpu\lib\site-packages\torch\_ops.py", line 105, in load_library
    ctypes.CDLL(path)
  File "C:\Users\dff40\.conda\envs\pytorch04gpu\lib\ctypes\__init__.py", line 348, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: [WinError 126]The specified module cannot be found.
(pytorch04gpu)

will not give up

The error content seems to be related to GPU. Maybe you should install the CPU version. So uninstall and run

$ pip install torch-scatter==latest+cpu -f https://pytorch-geometric.com/whl/torch-1.7.0.html
Looking in links: https://pytorch-geometric.com/whl/torch-1.7.0.html
Collecting torch-scatter==latest+cpu
  Downloading https://pytorch-geometric.com/whl/torch-1.7.0/torch_scatter-latest%2Bcpu-cp36-cp36m-win_amd64.whl (289 k
B)
     |████████████████████████████████| 289 kB 364 kB/s
Installing collected packages: torch-scatter
Successfully installed torch-scatter-2.0.5

With this, when I moved the previous command, it worked safely!

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