Centos7上安装Python3
安装新的Python3与系统自带的Python2共存安装依赖
yum -y install gcc make patch gdbm-devel openssl-devel sqlite-devel readline-devel zlib-devel bzip2-devel
下载Python3并编译安装
下载Python3
wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz
可以使用迅雷下载再传到服务器上
新建程序目录
mkdir /usr/local/python3
解压并编译安装Python3
tar -xvJfPython-3.6.2.tar.xz
cd Python-3.6.2
./configure --prefix=/usr/local/python3
make && make install
至此Python3和pip3已经安装好
设置环境变量
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
此时使用python3命令就是执行python3，使用python命令就是执行自带的python2，pip亦然
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