[Ubuntu] Python3.5升级为Python3.6

1. 添加 Python 安装源
sudo add-apt-repository ppa:jonathonf/python-3.6
2. 更新软件列表:
sudo apt-get update
3. 安装Python3.6:
sudo apt-get install python3.6
4. 设置Python3.6的优先级:
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.5 1
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.6 2
5. 更新pip:
sudo apt-get install python3-pip
sudo pip3 install --upgrade pip
6. 查询版本
python3 --version
pip3 -V
7. 修复BUG

如果遇到报错ModuleNotFoundError: No module named 'apt_pkg', 执行以下代码:

sudo apt-get remove --purge python-apt
sudo apt-get install python-apt -f 
cd /usr/lib/python3/dist-packages/ 
sudo cp apt_pkg.cpython-3?m-x86_64-linux-gnu.so apt_pkg.cpython-36m-x86_64-linux-gnu.so 

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