安装依赖
Ubuntu/Debian下需安装的依赖：
sudo apt-get install -y gcc make cmake build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev xz-utils tk-dev libffi-dev liblzma-dev python-openssl
Fedora/CentOS/RHEL(aws ec2)下需安装的依赖：
yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel libffi-devel
下载安装包
https://www.python.org/ftp/python/ cd /usr/local/ wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz
解压、编译、安装
解压 tar -zxvf Python-3.7.0.tgz 建立一个空文件夹，用于存放python3程序 mkdir /usr/local/python3 执行配置文件，编译，编译安装 cd Python-3.7.0 ./configure --prefix=/usr/local/python3 make && make install
创建软连接
ln -s /usr/local/python3/bin/python3.7 /usr/bin/python3 ln -s /usr/local/python3/bin/pip3.7 /usr/bin/pip3
