Centos安装python3

yum install -y update && yum install -y upgrade
yum install -y gcc gcc-c++
yum -y install gcc automake autoconf libtool make
yum groupinstall -y 'Development Tools'
yum install -y gcc openssl-devel bzip2-devel libffi-devel

wget https://www.python.org/ftp/python/3.9.5/Python-3.9.5.tgz &&tar -zxvf Python-3.9.5.tgz

mkdir /usr/local/python3 
cd Python-3.9.5/
./configure --prefix=/usr/local/python3 --enable-optimizations --with-ssl 
make && make install
ln -s /usr/local/python3/bin/python3 /usr/local/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/local/bin/pip3
pip3 install --upgrade pip