Traceback (most recent call last):


 "/usr/bin/pip", line 9, in <module>

from pip import main
ImportError: cannot import name main

Traceback (most recent call last):


 "examples/pointnet2_segmentation.py", line 142, in <module>

train()


 "examples/pointnet2_segmentation.py", line 91, in train

out = model(data)


 "/home/sohee/anaconda3/envs/PyGeo/lib/python3.6/site-packages/torch/nn/modules/module.py", line 532, in __call__

result = self.forward(*input, **kwargs)


 "examples/pointnet2_segmentation.py", line 63, in forward

sa1_out = self.sa1_module(*sa0_out)


 "/home/sohee/anaconda3/envs/PyGeo/lib/python3.6/site-packages/torch/nn/modules/module.py", line 532, in __call__

result = self.forward(*input, **kwargs)


 "/home/sohee/coding/pytorch_geometric/examples/pointnet2_classification.py", line 20, in forward

idx = fps(pos, batch, ratio=self.ratio)


 "/home/sohee/coding/pytorch_geometric/torch_geometric/nn/pool/__init__.py", line 43, in fps

raise ImportError('`fps` requires `torch-cluster`.')
ImportError: `fps` requires `torch-cluster`.
