Ubuntu14.04下安装Tensorflow遇到的问题

安装步骤：

首先说说安装步骤，挺简单的，就是确认pip和Python的版本

pip -V

python

如果不是最新版本就更新一下

$sudo apt-get install python-pip python-dev

然后就是安装Tensorflow了

$pip install tensorflow # Python 2.7; CPU support (no GPU support)

$pip3 install tensorflow # Python 3.n; CPU support (no GPU support)

$pip install tensorflow-gpu # Python 2.7; GPU support

$pip3 install tensorflow-gpu # Python 3.n; GPU support 

如果上面的步骤不成功，就使用下面的命令：

$sudo pip install --upgradeTF_PYTHON_URL # Python 2.7

$sudo pip3 install --upgradeTF_PYTHON_URL # Python 3.N

各种版本的下载地址：

Python 2.7

CPU only:

https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-1.1.0-cp27-none-linux_x86_64.whl

GPU support:

https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow_gpu-1.1.0-cp27-none-linux_x86_64.whl

Python 3.4

CPU only:

https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-1.1.0-cp34-cp34m-linux_x86_64.whl

GPU support:

https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow_gpu-1.1.0-cp34-cp34m-linux_x86_64.whl

Python 3.5

CPU only:

https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-1.1.0-cp35-cp35m-linux_x86_64.whl

GPU support:

https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow_gpu-1.1.0-cp35-cp35m-linux_x86_64.whl

Python 3.6

CPU only:

https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-1.1.0-cp36-cp36m-linux_x86_64.whl

GPU support:

https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow_gpu-1.1.0-cp36-cp36m-linux_x86_64.whl

验证tensorflow是否安装成功

1. 启动终端，输入python
2. 输入以下代码：

>>> import tensorflow as tf
>>> hello = tf.constant('Hello, TensorFlow!')
>>> sess = tf.Session()
>>> print(sess.run(hello))

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如果输出Hello, TensorFlow!则代表安装成功。

查看Tensorflow版本：

$ pip show tensorflow

问题：

安装之后测试发现以下问题，搜了很多安装经验，我感觉应该是我之前安装的Tensorflow有冲突，虽然显示安装成功了，运行却出错。试了好多办法都不可行，无奈我把Ubuntu重新装了一下，一切就正常了。

Traceback (most recent call last):
  File "", line 1, in
  File "/usr/local/lib/python2.7/dist-packages/tensorflow/__init__.py", line 24, in
    from tensorflow.python import *
  File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/__init__.py", line 104, in
    from tensorflow.python.platform import test
  File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/platform/test.py", line 53, in
    import mock                # pylint: disable=g-import-not-at-top,unused-import
  File "/usr/local/lib/python2.7/dist-packages/mock/__init__.py", line 2, in
    import mock.mock as _mock
  File "/usr/local/lib/python2.7/dist-packages/mock/mock.py", line 69, in
    from pbr.version import VersionInfo
ImportError: No module named pbr.version

Traceback (most recent call last):
  File "", line 1, in
  File "/usr/local/lib/python2.7/dist-packages/tensorflow/__init__.py", line 24, in
    from tensorflow.python import *
  File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/__init__.py", line 51, in
    from tensorflow.python import pywrap_tensorflow
ImportError: cannot import name pywrap_tensorflow