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Centos下安装Python3.6和Python2共存

   

写在前面

centos6.8中默认自带的python版本为python2.6,那么这里需要将其改为python3

下载并解压

官方下载地址为 https://www.python.org/downlo… ,这里已3.6.3为例。

  # 下载

wget https://www.python.org/ftp/python/3.6.3/Python-3.6.3.tgz

# 解压

tar -zxvf Python-3.6.3.tgz

cd Python-3.6.3

安装

  [root@localhost ~]# ./configure prefix=/usr/local/python3 –enable-optimizations

[root@localhost ~]# make && make install

修改python3为默认的python

  [root@localhost ~]# which python

/usr/bin/python

[root@localhost ~]# mv /usr/bin/python /usr/bin/python.bak

/usr/bin/python

[root@localhost ~]# ln -s /usr/local/python3/bin/python3 /usr/bin/python

python3和python2共存

  [root@localhost ~]# python -V

Python 3.6.3

[root@localhost ~]# python2.6 -V

Python 2.6.6

由于yum用的python仍然是2.6,所以这里修改一下

  [root@localhost ~]# vim /usr/bin/yum

将第一行改为:

  #!/usr/bin/python2.6