將Tensorflow從usr/bin/python鏈接到conda環境python

Question

我的Tensorflow在我的主usr/bin/python上安裝了GPU，例如，在AWS EC2機器上，我想在conda環境中使用它。這可能沒有重新安裝每個環境張量流？

編輯：我發現了關於virtual-env --system-site-packages選項。 Conda的等價物可能嗎？特別是像Tensorflow-gpu這樣的包需要爲特定硬件構建，並且不能直接在pip上使用。

Answer 1

如果tensorflow安裝在系統中，那麼它可能會出現在這四個目錄之一：

/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 

要使系統包也成爲暢達可用，您可以執行以下操作：

(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 

然後驗證這些路徑已添加：

(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'] 

現在您可以導入任何系統包。

如果你不希望這種改變是永久性的爲您暢達的環境，可以包含系統軟件包的目錄總是添加到PYTHONPATH環境變量：

(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']