目前面临的问题，在kali操作系统中默认安装了python2和python3，但是pip命令所安装的库都在python2里面，无法引入python3

这就导致使用python3 代码引用第三方库存在问题，故通过源码安装python3.7来解决问题。

首先下载python3.7

wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz

解压并新建安装python环境的目录

tar -zxvf Python-3.7.0.tgz

编译之前，安装一些所要依赖的包

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

假如报错了，就删除对应的lock
rm /var/cache/apt/archives/lock

编译安装

./configure --enable-optimizations --prefix=/usr/local/Python-3.7/ && make && make install

建立软连接

ln -s -b /usr/local/python3.7/bin/python3.7 /usr/bin/python
ln -s -b /usr/local/python3.7/bin/pip3 /usr/bin/pip3