ubuntu卸载python

# 这些代码慎用
sudo apt-get remove python2.7
sudo apt-get remove --auto-remove python2.7
sudo apt-get purge python2.7 or sudo apt-get purge --auto-remove python2.7


# 这些可以卸载python3再重新装
sudo apt-get remove python3
sudo rm -r /etc/py*
sudo rm -r /usr/bin/py*
sudo rm -r /usr/lib/py*
sudo rm -r /usr/local/lib/py*
sudo rm -r /usr/share/py*
sudo rm -r /usr/share/man/man1/py*
apt autoremove
sudo apt-get build-dep python3.7
apt-get install python3.7
ln -s /usr/bin/python3.7 /usr/bin/python
ln -s /usr/bin/python3.7 /usr/bin/python3
apt-get install python3-pip

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python3 get-pip.py --force-reinstall