py3安装

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 libffi-devel

wget https://www.python.org/ftp/python/3.7.1/Python-3.7.1.tgz

tar -zxvf Python-3.7.1.tgz

mkdir /usr/local/python3 

cd Python-3.7.1

./configure --prefix=/usr/local/python3

make && make install

ln -s /usr/local/python3/bin/python3.7 /usr/bin/python3

ln -s /usr/local/python3/bin/pip3.7 /usr/bin/pip3