ImportError cannot import name BytesIO when import caffe

转自：https://github.com/BVLC/caffe/issues/1549
I am trying to make caffe running on my machine equipped with Ubuntu 12.04LTS.
After finishing all the steps on the Installation page, I trained the LeNet model successfully and tried to use it as the tutorial from here. Then I got the following error:

Traceback (most recent call last): 
    File "", line 1, in <module>
ImportError: No module named caffe
Error in sys.excepthook:
Traceback (most recent call last):
    File "/usr/lib/python2.7/dist-packages/apport_python_hook.py", line 66, in apport_excepthook
      from apport.fileutils import likely_packaged, get_recent_crashes
    File "/usr/lib/python2.7/dist-packages/apport/__init__.py", line 1, in <module>
      from apport.report import Report
    File "/usr/lib/python2.7/dist-packages/apport/report.py", line 18, in <module>
      import problem_report
    File "/usr/lib/python2.7/dist-packages/problem_report.py", line 14, in <module>
      import zlib, base64, time, sys, gzip, struct, os
    File "/usr/lib/python2.7/gzip.py", line 10, in <module>
      import io
    File "${HOME}/path/to/caffe/python/caffe/io.py", line 2, in <module>
      import skimage.io
    File "/usr/local/lib/python2.7/dist-packages/skimage/io/__init__.py", line 11, in <module>
      from ._io import *
    File "/usr/local/lib/python2.7/dist-packages/skimage/io/_io.py", line 1, in <module>
      from io import BytesIO
ImportError: cannot import name BytesIO

Original exception was:
Traceback (most recent call last): 
    File "", line 1, in <module>
ImportError: No module named caffe

I set the PYTHONPATH in .bashrc file before I did the above.
What is the problem? Could anyone give some hint? I am really confused.

Solution:

This issue was also posted as a question on Stack Overflow;
it looks like you set your PYTHONPATH to include ${HOME}/path/to/caffe/python/caffe$
rather than
${HOME}/path/to/caffe/python $
(note the lack of the last caffe part in that).