Debian9如何安装python3.7

1.`apt-get update`，输入该命令按回车键 

2.输入该命令按回车键： apt-get install build-essential zlib1g-dev libncurses5-dev libgdbm-dev libnss3-dev libssl-dev libreadline-dev libffi-dev wget -y  

3.`curl -O https://www.python.org/ftp/python/3.7.3/Python-3.7.3.tar.xz`，输入该命令按回车键 

4.`tar -xf Python-3.7.3.tar.xz`，输入该命令按回车键 

5.`cd Python-3.7.3`，输入该命令按回车键 

6.`./configure --enable-optimizations`，输入该命令按回车键 

7.`make -j 8`，输入该命令按回车键 

8.`make altinstall`，输入该命令按回车键 

9.`python3.7 -V`，输入该命令按回车键查看已安装好