centos7.6 python3安装过程

centos7.6 python3安装过程

安装python3
https://www.cnblogs.com/liuxuanhe/p/9219351.html

1.执行:yum install python-pip
若没有python-pip包，先执行：yum -y install epel-release，再执行yum install python-pip
2.  pip install --upgrade pip
centos默认安装了python2.7
1.  mkdir /usr/local/python3
2.安装依赖包：
yum groupinstall "Development tools"   -y，不是必须安装的
yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel  -y
 yum -y install gcc 
3.在/usr/local/python3目录下
cd /usr/local/python3
wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz
4.在/usr/local/python3目录下
tar -xvf  Python-3.6.2.tar.xz
cd Python-3.6.2
./configure --prefix=/usr/local/python3
make && make install

（可选）创建引用
ln -s /usr/local/python3/bin/python3.6 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3



使用 virtualenv 创建虚拟环境
https://www.jianshu.com/p/66a437b95780
安装 virtualenv
pip install vi