查看“Centos7 安装Python3、安装TensorFlow以及卸载”的源代码

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1.下载Python3    https://www.python.org/getit/

两个包都可以使用，不过最好不要下载XZ格式的！！！会出现一些麻烦！！！

 Version	Operating System	Description	MD5 Sum	File Size
 Gzipped source tarball	Source release	 	2d0fc9f3a5940707590e07f03ecb08b9	22540566
 XZ compressed source tarball	Source release	 	692b4fc3a2ba0d54d1495d4ead5b0b5c	16872064

下载示例:

  （1）linux中可以直接下载
 wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz
  （2）可以下载到本地然后传到linux上。看个人喜好。

2.创建一个文件夹：mkdir /usr/local/python3

   解压文件

 tar -xf Python-3.6.5.tgz -C /usr/local/python3

3.解压之后有一个目录/usr/local/python3目录下有，Python 3.6.5，进入目录 

 cd Python-3.6.5

4.开始安装，使用编译的方法进行安装

确保已经安装以下依赖

 yum install gcc-c++
 yum install pcre pcre-devel
 yum install zlib zlib-devel
 yum install openssl openssl--devel
然后执行

 ./configure prefix=/usr/local/python3
 
 make && make install
创建软链接

 ln -s /usr/local/Python3/bin/python3 /usr/bin/python3
 ln -s /usr/local/Python3/bin/pip3 /usr/bin/pip3
5.完成后再控制台输入python3,测试一下python3 安装是否成功。

6.安装TensorFlow

 pip3 install tensorflow
指定版本的安装
 pip install tensorflow==1.6.0  

7.验证安装

 $ python3
 Python 3.5.3 (default, Jan 19 2017, 14:11:04) 
 [GCC 6.3.0 20170118] on linux
 Type "help", "copyright", "credits" or "license" for more information.
 >>> import tensorflow as tf
 >>> hello = tf.constant('Hello, TensorFlow!')
 >>> sess = tf.Session()
 2017-08-28 13:02:47.410873: W tensorflow/core/platform/cpu_feature_guard.cc:45] The TensorFlow library wasn't compiled to 
 use SSE4.1 instructions, but these are available on your machine and could speed up CPU computations.
 2017-08-28 13:02:47.410971: W tensorflow/core/platform/cpu_feature_guard.cc:45] The TensorFlow library wasn't compiled to 
 use SSE4.2 instructions, but these are available on your machine and could speed up CPU computations.
 2017-08-28 13:02:47.410990: W tensorflow/core/platform/cpu_feature_guard.cc:45] The TensorFlow library wasn't compiled to 
 use AVX instructions, but these are available on your machine and could speed up CPU computations.
 >>> print(sess.run(hello))
 b'Hello, TensorFlow!'
 >>> a = tf.constant(10)
 >>> b = tf.constant(32)
 >>> print(sess.run(a+b))
 42
 >>> quit()
至此，Centos7下安装Python3.x和TensorFlow完成。

卸载：

 1. sudo pip uninstall protobuf
 2. sudo pip uninstall tensorflow