说明：
树莓派安装了python2.7，和python3.7，我嫌弃2.7多余，卸载了2.7 并将3.7 连接到了 python （本来是python3），
因为没有pip工具，
wget --no-check-certificate https://pypi.python.org/packages/source/s/setuptools/setuptools-19.6.tar.gz
tar -zxvf setuptools-19.6.tar.gz
cd setuptools-19.6/
python3 setup.py build
python3 setup.py installwget --no-check-certificate https://pypi.python.org/packages/source/p/pip/pip-8.0.2.tar.gz
tar -zxvf pip-8.0.2.tar.gz
cd pip-8.0.2/
python3 setup.py build
python3 setup.py install在安装 apt-get install python3-distutils 过程中报错
/bin/sh: 1: /usr/bin/apt-listchanges: not found
E: Sub-process /usr/bin/apt-listchanges --apt || test $? -lt 10 returned an error code (1)
E: Failure running script /usr/bin/apt-listchanges --apt || test $? -lt 10
且当我执行apt-get 命令时总是报相同的错误，
解决方法
将python3.7重新连接到python3
sudo ln -s /usr/bin/python3.7 /usr/bin/python3
