CentOS7安装python3
1 - 安装前准备
yum -y groupinstall "Development tools" yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel yum install -y libffi-devel zlib1g-dev yum install zlib* -y
2 - 下载安装包
wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tar.xz
3 - 解压安装包
tar -xvJf Python-3.7.2.tar.xz
4 - 创建安装目录
mkdir /usr/local/python3
5 - 编译安装
cd Python-3.7.2 ./configure --prefix=/usr/local/python3 --enable-optimizations --with-ssl #第一个指定安装的路径,不指定的话,安装过程中可能软件所需要的文件复制到其他不同目录,删除软件很不方便,复制软件也不方便. #第二个可以提高python10%-20%代码运行速度. #第三个是为了安装pip需要用到ssl,后面报错会有提到. make && make install
6 - 创建软链接
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
7 - 检查
python3 -V
pip3 -V
8 - 更新pip
pip3 install --upgrade pip