[pip ]from pip import main ImportError: cannot import name main

  "  pip install --upgrade --user pip "

Traceback (most recent call last):

  File "/usr/bin/pip", line 9, in <module>

    from pip import main

ImportError: cannot import name main

위와 같은 오류 해결 방법

1- Uninstall the pip update from python.
2- Uninstall pip package from your Ubuntu.
3- Check that pip binary is not longer in your system.

python -m pip uninstall pip
apt remove python-pip
whereis pip

4- Download and install pip. (credits for VanDragt.com)

wget https://bootstrap.pypa.io/get-pip.py -O /tmp/get-pip.py
sudo python3 /tmp/get-pip.py
pip install --user pipenv
pip3 install --user pipenv
echo "PATH=$HOME/.local/bin:$PATH" >> ~/.profile
source ~/.profile
whereis pip