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  • centOS安装python3 以及解决 导入ssl包出错的问题

    参考:

    https://www.cnblogs.com/mqxs/p/9103031.html

    https://www.cnblogs.com/cerutodog/p/9908574.html

    确认环境 系统版本

    openssl版本

    [root@67 local]# openssl version
    OpenSSL 1.0.2k-fips 26 Jan 2017

    OPS,居然新安装的centOS系统自带的就是1.0.2版本,这是不是意味着我可以很轻松的安装好python,然后import ssl就不会报错,而不用再去额外配置openssl了呢

    ?期待的搓搓手(原因是python3需要要注意的地方是版本要1.02以上版本才能正常使用像requests之类的库)

    为了避免后面报各种错,我们先把需要的信赖包安装上,再安装python3

    执行完make&&make install之后,可能会出现这种报错:

    “ModuleNotFound:No module named '_ctypes'”

    这里需要执行:

    yum install libffi-devel -y


    安装python3.6可能使用的依赖
    yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel gcc gcc-c++  openssl-devel
     

    [root@67 local]# yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel gcc gcc-c++ openssl-devel
    Loaded plugins: fastestmirror, langpacks
    Loading mirror speeds from cached hostfile
    * base: mirrors.aliyun.com
    * extras: mirrors.aliyun.com
    * updates: mirrors.aliyun.com
    Package 1:openssl-devel-1.0.2k-16.el7_6.1.x86_64 already installed and latest version
    Package bzip2-devel-1.0.6-13.el7.x86_64 already installed and latest version
    Package expat-devel-2.1.0-10.el7_3.x86_64 already installed and latest version
    Package gdbm-devel-1.10-8.el7.x86_64 already installed and latest version
    Package readline-devel-6.2-10.el7.x86_64 already installed and latest version
    Package sqlite-devel-3.7.17-8.el7.x86_64 already installed and latest version
    Package gcc-4.8.5-36.el7_6.2.x86_64 already installed and latest version
    Package gcc-c++-4.8.5-36.el7_6.2.x86_64 already installed and latest version
    Package 1:openssl-devel-1.0.2k-16.el7_6.1.x86_64 already installed and latest version
    Nothing to do
    [root@67 local]# yum install libffi-devel -y
    Loaded plugins: fastestmirror, langpacks
    Loading mirror speeds from cached hostfile

    * base: mirrors.aliyun.com
    * extras: mirrors.aliyun.com
    * updates: mirrors.aliyun.com
    Package libffi-devel-3.0.13-18.el7.x86_64 already installed and latest version

    下面开始安装,太紧张了
     

    建立一个文件夹安装python3

    mkdir /usr/local/python3

    下载安装文件

    下载
    wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tgz

    解压

    tar -xf Python-3.6.2.tgz

    进入目录

    cd Python-3.6.2

    安装python3 (要注意如果你的ssl也是指定目录安装的 --with要跟上路径)

    ./configure --prefix=/usr/local/python3 --with-ssl

    编译,安装,这一步会花的时间长一点

    make && make install

     安装完成

    创建软连接之前先验证一下环境

    cd /usr/local/python3/bin/

    cd /usr/bin

     

    最后创建软连接

    ln -s /usr/local/python3/bin/python3 /usr/bin/python3

    ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3

    建立软链接后

    接下来就是要验证的时候,太紧紧紧张了

    验证通过了~ 激动呀 开心呀,上次在centOS6.5搞这一套流程,一直有问题,整了周五下午到凌晨3点,周六下午7点到凌晨1点,整个人都不好了.

    居然重装一次系统就解决问题了.

    centOS7.6 自带的openSSL版本就可以支持python3了,无须再做配置,这真是省了好多心呀

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  • 原文地址:https://www.cnblogs.com/kaerxifa/p/10944473.html
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