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ubuntu16.04下python2、python3環境選擇與python升級

pip3 eba 更換 rac 查看 ror 使用 tps 切換

參考鏈接:https://www.jianshu.com/p/63c1f22e1fed

Ubuntu中python版本問題:

  • 添加PPA
sudo add-apt-repository ppa:jonathonf/python-3.6
  • 查看更新和安裝更新:
sudo apt-get update 
sudo apt-get install python3.6
  • 更換命令行中的python默認版本
sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 100
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 150
  • 查看python默認版本

python -V
  • 切換版本:

sudo update-alternatives --config python3

Ubuntu中python升級到3.6

sudo add-apt-repository ppa:jonathonf/python-3.6
sudo apt-get update
sudo apt-get install python3.6

sudo apt install spyder3
sudo rm /usr/bin/python
sudo ln -s /usr/local/bin/python3.6 /usr/bin/python

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
sudo update-alternatives --config python3
python -V

更新:

2018-05-29 08:58:06

升級到python3.6 後使用pip install遇到問題:

    import apt
  File "/usr/lib/python3/dist-packages/apt/__init__.py", line 23, in <module>
    import apt_pkg
ModuleNotFoundError: No module named apt_pkg

Original exception was:
Traceback (most recent call last):
  File "/home/osk/.local/bin/pip3
", line 7, in <module> from pip._internal import main ModuleNotFoundError: No module named pip._internal

解決方案:

重新將ubuntu16.04默認的python3.5版本設置為優先級

ubuntu16.04下python2、python3環境選擇與python升級