一、安装依赖包

sudo apt-get install -y make build-essential libssl-dev zlib1g-dev   
sudo apt-get install -y libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm 
sudo apt-get install -y libncurses5-dev  libncursesw5-dev xz-utils tk-dev

二、从Python网页中找到相应的版本，点击下载

sudo wget https://www.python.org/ftp/python/3.7.3/Python-3.7.3.tgz 

三、解压

sudo tar -zxvf Python-3.7.3.tgz 

四、解压结束 进入生成的目录python-3.7.3

cd Python-3.7.3 

五、安装python

sudo ./configure --prefix=/usr/local/python3
sudo make
sudo make install

六、安装完成，创建软连接，打印版本测试

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

python3 -V
pip3 -V

安装结束。