linux下多python版本

Posted 2020-11-02 仰望的花鼻子

python -v 查看当前系统默认python版本

which python   查找默认python的安装路径  默认在/usr/bin/python下

yum install -y gcc make patch gdbm-devel openssl-devel sqlite-devel readline-devel zlib-devel bzip2-devel  或

yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make   安装相关包

wget https://www.python.org/ftp/python/3.5.2/Python-2.7.13.tar.xz    下载python2.7版本

tar xf Python-2.7.13.tar.xz -C /usr/local/src/   解压安装包到指定目录(yum -y install xz  #若失败,重建yum缓存.yum clean all ,yum makecache)

cd /usr/local/src/Python-2.7.13   进入安装目录

./configure --prefix=/usr/local/python27  配置python安装路径

make && make install   安装  

 

pip install virtualenv   安装虚拟环境

virtualenv -p /usr/local/python27 TestEnv      # 创建虚拟环境，名称为TestEnv       -p参数指定Python解释器程序路径     这将会使用 /usr/bin/python2.7

进入TestEnv/bin目录，执行source activate命令即可激活

virtualenv /root/myvirenv/py27env --python=/usr/local/python27/bin/python2.7   指定虚拟环境所有python的路径