安装python

yum -y install zlib* openssl-devel

#如果官网下载不了可以到http://download.baiyongjie.com/python/Python-3.6.4.tgz进行下载
wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz

tar -xvf Python-3.6.4.tgz
mkdir /usr/local/python3
cd Python-3.6.4
./configure --prefix=/usr/local/python3
make && make install

mv Python-3.6.4 /usr/local/src/

创建新版本的软连接。

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

$ python3  -V
Python 3.6.4

$ pip3 -V
pip 9.0.1 from /usr/local/python3/lib/python3.6/site-packages (python 3.6)

#升级pip版本
$ pip3 install --upgrade pip

$ pip3 -V
pip 19.3.1 from /usr/local/python3/lib/python3.6/site-packages/pip (python 3.6)