tensorflow学习001

骑猪看日落 2022-03-19 15:22 472阅读 0赞

centos7安装python3.6和tensorflow，学习tensorflow需要先学会环境的安装，本文介绍Centos7下安装tensorflow

确认Centos7操作系统

\# cat /etc/redhat-release  
CentOS Linux release 7.6.1810 (Core)

1、安装python3.6

安装依赖

\# yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make libffi-devel

从 [https://www.python.org/][https_www.python.org] 下载 Python-3.6.8.tgz

然后执行以下命令：

# tar zxvf Python-3.6.8.tgz
    # cd Python-3.6.8
    # ./configure --prefix=/usr/local/python36 --enable-optimizations
    # make && make install       比较慢，需要耐心等待
    # /usr/local/python36/bin/python3      可进入python界面

建立软连接

# python -V     此时看到2.7.5
    # which python
    # ll /usr/bin/ |grep python
    # mv /usr/bin/python /usr/bin/python.bak   备份之前的
    # ln -s /usr/local/python36/bin/python3 /usr/bin/python
    # ln /usr/local/python36/bin/pip3 /usr/bin/pip

修改yum命令

# vi /usr/bin/yum
    #!/usr/bin/python2.7     改成2.7
    
    # python -V
    # pip -V

2、安装tensorflow

从 https://pypi.org/project/tensorflow/\#files  下载whl文件（如 https://files.pythonhosted.org/packages/22/cc/ca70b78087015d21c5f3f93694107f34ebccb3be9624385a911d4b52ecef/tensorflow-1.12.0-cp36-cp36m-manylinux1\_x86\_64.whl）

然后执行pip命令：

pip install tensorflow-1.12.0-cp36-cp36m-manylinux1\_x86\_64.whl

（如果报没有wheel，先执行pip install wheel）

等待安装结束。验证tensorflow安装成功

[root@localhost ~]# python
    Python 3.6.8 (default, Feb 17 2019, 16:12:54)
    [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import tensorflow as tf
    >>> a = tf.constant([1.0, 2.0], name='a')
    >>> b = tf.constant([2.0, 3.0], name='b')
    >>> result = a + b
    >>> sess = tf.Session()
    >>> sess.run(result)
    array([3., 5.], dtype=float32)

tensorflow运算执行成功，说明tensorflow已成功安装

[https_www.python.org]: https://www.python.org/