pip 卸載
python -m pip uninstall pip
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py
pip install --user --upgrade pip
pip3 install --user --upgrade pip
卸載和安裝python庫
::查看已經安裝的庫,並把相關信息導入到txt文件
pip freeze > installed.txt
::讀取txt文件,卸載所有文件中包含的庫
pip uninstall -r installed.txt
::讀取txt文件,安裝所有文件中包含的庫
pip uninstall -r installed.txt
virtualenv 環境部署
$: which python3
> /usr/bin/python3
$: pip install --user --upgrade pip
$: pip install virtualenv
$: virtualenv -p /usr/bin/python3 --no-site-packages venv
$: source venv/bin/activate
venv$: python --version
> python 3.5.2
$:deactivate
$: python --version
> Python 2.7.12
cd venv/Scripts/ & activate
cd venv/Scripts/ & deactivate