from caffe2.python import workspace(ImportError: No module named 'past')

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现在caffe2整合到pytorch1.0中，无需单独配置编译

之前遇到此问题，特此记录

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/hitachi/.local/lib/python3.5/site-packages/caffe2/python/workspace.py", line 15, in <module>
    from past.builtins import basestring
ImportError: No module named 'past'

解决方法：pip3 install --user future

验证caffe2方法：

# To check if Caffe2 build was successful
python -c 'from caffe2.python import core' 2>/dev/null && echo "Success" || echo "Failure"

# To check if Caffe2 GPU build was successful
# This must print a number > 0 in order to use Detectron
python -c 'from caffe2.python import workspace; print(workspace.NumCudaDevices())'