Ubuntu环境下对python版本进行升级

apt-get install software-properties-common 

add-apt-repository 

ppa:jonathonf/python-3.6 

apt-get update apt-get install python3.6

 

cd /usr/bin/

rm python3

ln -s python3.6 python3

 

apt-get install python3-pip

 

如果 pip 出现 No module named apt_pkg 错误

sudo apt-get remove --purge python3-apt
sudo apt-get install python3-apt

后面可能会出现pip unsupported local setting

export LC_ALL=C
 

No module named 'setuptools'

sudo apt-get install python3-setuptools

 

如果提示ImportError: cannot import name 'main'

编辑 /usr/bin/pip 文件，修改代码

from pip._internal import main