python2--升级python3

 

先安装开发工具包:

  yum -y group install "Development Tools"

 

安装Python的依赖包:

  yum -y install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel vim 

 

下载最新的Python包:

  wget https://www.python.org/ftp/python/3.5.3/Python-3.5.3.tgz

  或者这里下载后上传:https://www.python.org/downloads/source/

 

解压编译安装:

  tar xf Python-3.5.3.tgz

  cd Python-3.5.3

  ./configure --prefix=/usr/local/python3.5

  make

  make altinstall(这一步如果是Python3.7会报错,需要另外安装一个依赖包)

 

为pip3和Python3创建链接:

[root@CentOS Python-3.5.3]# ln -fs /usr/local/python3.5/bin/python3 /usr/local/bin/
[root@CentOS Python-3.5.3]# ln -fs /usr/local/python3.5/bin/pip3 /usr/local/bin/
[root@CentOS Python-3.5.3]# mv /usr/bin/python/usr/bin/python_old
[root@CentOS Python-3.5.3]# ln -fs /usr/local/python3.5/bin/python3.5 /usr/bin/python
[root@CentOS Python-3.5.3]# ln -fs /usr/local/python3.5/bin/pip3.5 /usr/bin/pip

 

验证安装:

  pip -V

  python -V

 

修改yum文件

vim /usr/bin/yum

将 #!/usr/bin/python 修改为 #!/usr/bin/python2.7

 

 

详情参考:https://www.cnblogs.com/youngthink/p/6668127.html

 

posted on 2018-11-08 17:35  我要的明天  阅读(173)  评论(0编辑  收藏  举报

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