将 usr/bin/python 中的 Tensorflow 链接到 conda 环境 python答案

【问题标题】：Link Tensorflow from usr/bin/python to a conda environment python将 usr/bin/python 中的 Tensorflow 链接到 conda 环境 python
【发布时间】：2017-01-07 17:33:13
【问题描述】：

我的主 usr/bin/python 上安装了带有 GPU 的 Tensorflow，例如在 AWS EC2 机器上，我想在 conda 环境中使用它。这是否可能无需为每个环境重新安装 tensorflow？

编辑：我发现了 virtual-env --system-site-packages 选项。也许相当于 Conda ？尤其是对于像 Tensorflow-gpu 这样需要为特定硬件构建的包，并且不能直接在 pip 上使用。

【问题讨论】：

标签： python-2.7 tensorflow conda

【解决方案1】：

如果系统中安装了 tensorflow，那么它可能会出现在以下四个目录之一中：

/usr/local/lib/python2.7/dist-packages
/usr/local/lib/python2.7/site-packages
/usr/lib/python2.7/dist-packages
/usr/lib/python2.7/site-packages

要让系统包也可以在 conda 中使用，您可以执行以下操作：

(root) ~/condaexpts $ cat <<EOF > $CONDA_PREFIX/lib/python2.7/site-packages/systempkgs.pth
/usr/local/lib/python2.7/dist-packages
/usr/local/lib/python2.7/site-packages
/usr/lib/python2.7/dist-packages
/usr/lib/python2.7/site-packages
EOF

然后验证这些路径是否已添加：

(root) ~/condaexpts $ python
Python 2.7.12 |Continuum Analytics, Inc.| (default, Jul  2 2016, 17:42:40) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
Anaconda is brought to you by Continuum Analytics.
Please check out: http://continuum.io/thanks and https://anaconda.org
>>> import sys
>>> sys.path
['', '/home/ubuntu/condaexpts/m2/lib/python27.zip', '/home/ubuntu/condaexpts/m2/lib/python2.7', '/home/ubuntu/condaexpts/m2/lib/python2.7/plat-linux2', '/home/ubuntu/condaexpts/m2/lib/python2.7/lib-tk', '/home/ubuntu/condaexpts/m2/lib/python2.7/lib-old', '/home/ubuntu/condaexpts/m2/lib/python2.7/lib-dynload', '/home/ubuntu/condaexpts/m2/lib/python2.7/site-packages', '/home/ubuntu/condaexpts/m2/lib/python2.7/site-packages/setuptools-27.2.0-py2.7.egg', '/usr/local/lib/python2.7/dist-packages', '/usr/local/lib/python2.7/site-packages', '/usr/lib/python2.7/dist-packages']

现在你可以导入任何系统包了。

如果您不希望此更改对您的 conda 环境永久生效，您可以随时将包含系统包的目录添加到 PYTHONPATH 环境变量：

(root) ~/condaexpts $ PYTHONPATH=$PYTHONPATH:/usr/local/lib/python2.7/dist-packages/ python
Python 2.7.12 |Continuum Analytics, Inc.| (default, Jul  2 2016, 17:42:40) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
Anaconda is brought to you by Continuum Analytics.
Please check out: http://continuum.io/thanks and https://anaconda.org
>>> import sys
>>> sys.path
['', '/home/ubuntu/condaexpts', '/usr/local/lib/python2.7/dist-packages', '/home/ubuntu/condaexpts/m2/lib/python27.zip', '/home/ubuntu/condaexpts/m2/lib/python2.7', '/home/ubuntu/condaexpts/m2/lib/python2.7/plat-linux2', '/home/ubuntu/condaexpts/m2/lib/python2.7/lib-tk', '/home/ubuntu/condaexpts/m2/lib/python2.7/lib-old', '/home/ubuntu/condaexpts/m2/lib/python2.7/lib-dynload', '/home/ubuntu/condaexpts/m2/lib/python2.7/site-packages', '/home/ubuntu/condaexpts/m2/lib/python2.7/site-packages/setuptools-27.2.0-py2.7.egg']

【讨论】：