Centos7安装Python3

yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel

wget https://www.python.org/ftp/python/3.9.9/Python-3.9.9.tgz

tar -zxvf Python-3.6.5.tgz

#不同版本文件夹名称不同
cd Python-3.9.9

mkdir /usr/local/python3

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

make && make install

#为python3创建软连接
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
#为pip3创建软连接
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3

#V大写
python3 -V
pip3 -V