Python3安装

依赖安装：

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 libffi-devel -y

下载链接：https://www.python.org/downloads/source/

目前最新版本：wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tar.xz

编译安装：

./configure --prefix=/usr/local/python3
#./configure --prefix=/usr/local/python3 --enable-optimizations
make && make install

安装Python3时，会自动安装pip。假如没有，需要自己手动安装。

yum -y install python-pip

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

更新pip:

pip3 install --upgrade pip

安装扩展包：
解压后，

python setup.py install