Ubuntu 下Python pip3安裝及問題AttributeError: module 'pip.__main__' has no attribute '_main'
阿新 • • 發佈：2018-12-16
先解除安裝掉原先的pip3
sudo apt-get remove python3-pip
再重新安裝
sudo apt-get install python3-pip
測試：輸入 pip3 -V之後出現問題
Traceback (most recent call last):
File "/usr/bin/pip3", line 9, in <module>
from pip import main
ImportError: cannot import name 'main'
解決：
sudo gedit /usr/bin/pip3
把下面的三行
from pip import main
if name
sys.exit(main())
換成下面的三行
from pip import main
if name == ‘main’:
sys.exit(main._main())
然後儲存：source /usr/bin/pip3
繼續檢視版本：pip3 -V
得到：
pip 10.0.1 from /usr/local/lib/python2.7/dist-packages/pip (python 3.5)
這明顯是有問題的，版本問題
再繼續嘗試：
[email protected]:~$ sudo pip3 -V Traceback (most recent call last): File "/usr/bin/pip3", line 11, in <module> sys.exit(__main__._main()) AttributeError: module 'pip.__main__' has no attribute '_main'
不死心，想升級：
[email protected]:~$ pip3 install --upgrade pip Collecting pip Using cached https://files.pythonhosted.org/packages/c2/d7/90f34cb0d83a6c5631cf71dfe64cc1054598c843a92b400e55675cc2ac37/pip-18.1-py2.py3-none-any.whl Installing collected packages: pip Found existing installation: pip 10.0.1 Uninstalling pip-10.0.1: Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '/usr/bin/pip' Consider using the `--user` option or check the permissions. You are using pip version 10.0.1, however version 18.1 is available. You should consider upgrading via the 'pip install --upgrade pip' command.
許可權問題需要用sudo或是–user，重點問題就在這裡，我嘗試過很多次都是用sudo來升級的，每次都是一樣的問題無法解決，網路上也找不到解決辦法，如下
[email protected]:~$ sudo pip3 install --upgrade pip
Traceback (most recent call last):
File "/usr/bin/pip3", line 11, in <module>
sys.exit(__main__._main())
AttributeError: module 'pip.__main__' has no attribute '_main'
於是嘗試用–user
[email protected]:~$ pip3 install --user --upgrade pip
Collecting pip
Using cached https://files.pythonhosted.org/packages/c2/d7/90f34cb0d83a6c5631cf71dfe64cc1054598c843a92b400e55675cc2ac37/pip-18.1-py2.py3-none-any.whl
Installing collected packages: pip
Successfully installed pip-18.1
You are using pip version 10.0.1, however version 18.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
顯示已經升級為18.1了那麼我們來看下版本吧
[email protected]:~$ pip3 -V
pip 10.0.1 from /usr/local/lib/python2.7/dist-packages/pip (python 3.5)
[email protected]:~$ pip -V
pip 10.0.1 from /usr/local/lib/python2.7/dist-packages/pip (python 2.7)
[email protected]:~$ sudo pip -V
pip 10.0.1 from /usr/local/lib/python2.7/dist-packages/pip (python 2.7)
[email protected]:~$ sudo pip3 -V
pip 18.1 from /home/yxh/.local/lib/python3.5/site-packages/pip (python 3.5)
終於沒有問題了！！
最後還有點問題
[email protected]:~$ pip3 install --user matplotlib
bash: /usr/bin/pip3: No such file or directory
解決：
[email protected]:~$ which pip3
/home/yxh/.local/bin/pip3
[email protected]:~$ echo $PATH
/opt/ros/kinetic/bin:/home/yxh/anaconda2/env/py3/bin:/home/yxh/anaconda2/env/tensorflow/bin:/home/yxh/anaconda2/bin:/usr/bin/python:/home/yxh/bin:/home/yxh/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
[email protected]:~$ sudo gedit ~/.bashrc
在裡面將
export PAHT="/usr/local/bin:$PATH"
加入即可