Solution: remember to run the 'activate' script:

    % source ~/tf_compile/tensorflow/bin/activate


On Friday, September 1, 2017 at 2:39:33 PM UTC-7, ro...@cgl.ucsf.edu wrote:
> With the prebuilt version of tensorflow, I did:
> 
>    virtualenv --system-site-packages  ~/tensorflow
> 
> and somehow got it working with keras. Now I've compiled tensorflow in 
> another shell/directory, where to start with I did:
> 
>    virtualenv --system-site-packages  .
> 
> and I got it running with keras on my net, with a nice speedup. Then I went 
> back to my previous shell, did a deactivate, then
> 
>     virtualenv --system-site-packages ~/tf_compile/tensorflow
> 
> to point to the dir that was '.' above, but my prompt path did not pick up 
> '(tensorflow)' as before:
> 
>     % virtualenv --system-site-packages ~/tf_compile/tensorflow
>     New python executable in /Users/priot/tf_compile/tensorflow/bin/python
>     Installing setuptools, pip, wheel...done.
>     priot keras%
> 
> and I get:
> 
> % python prog.py
>   ...
>   File "/Users/ppp/anaconda/lib/python2.7/site-
>   packages/keras/backend/tensorflow_backend.py", line 1, in <module>
>     import tensorflow as tf
>   ImportError: No module named tensorflow
> 
> Seems inconsistent.
> 
> % virtualenv --version
> 15.1.0
> 
> % python --version
> Python 2.7.10 :: Anaconda custom (x86_64)
> 
> OS: OSx Darwin

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