1、查看目前python版本

python --version

2、安装依赖环境

sudo apt-get install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

3、下载python3.7.2安装包

wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tgz

4、新建安装路径（根据个人喜好），然后解压安装包

mkdir -p /usr/local/python3

tar -zxvf Python-3.7.2.tgz

5、进入解压后的路径编译，安装

cd cd Python-3.7.2

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

make && make install

6、编译安装成功后，修改软连接

rm /usr/bin/python

rm /usr/bin/pip

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

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

7、检查安装

python --version #输出版本号为3.7.2即升级成功