kali下将Python2.x切换至Python3.x

1、首先在/usr/local/下创建一个Python-3.6

mkdir /usr/local/Python-3.6

2、将安装包拖放至/home并解压

3、添加更新源更新

gedit /etc/apt/sources.list

附：官方更新源：

deb http://http.kali.org/kali kali-rolling main non-free contrib
deb-src http://http.kali.org/kali kali-rolling main non-free contrib

4、安装依赖

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

5、编译安装

./configure --prefix=/usr/local/Python-3.6/

or

 ./configure --enable-optimizations --prefix=/usr/local/Python-3.6/   --使用了--enable-optimizations安装出现失败，具体原因不知道

--enable-optimizations 为最优安装   --prefix 声明安装路径

make    --编译

make install  --编译安装

5、创建软链接
①备份以前的Python

mv /usr/bin/python /usr/bin/python_bk

②创建新的Python链接

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

6、解决pip不能用的问题
使用命令

python -m ensurepip
python -m pip install

参考网址：
https://blog.csdn.net/Dolorous_yuanshao/article/details/80380488

kali最新版好像有Python3.x版本的

具体操作看你的kali是否存在Python3.x版本

我用过的命令：

root@kali:~# mv /usr/bin/python /usr/bin/python2
root@kali:~# ln -s /usr/bin/python3 /usr/bin/python
root@kali:~# mv /usr/bin/python-config /usr/bin/python2-config
root@kali:~# ln -s /usr/bin/python3-config /usr/bin/python-config