python使用pip安装库时出现timeout或者速度慢

豆瓣：https://pypi.doubanio.com/simple/

pip3 install -i https://pypi.doubanio.com/simple/ selenium

easy_install -i https://pypi.doubanio.com/simple/ selenium

pip install -i https://pypi.doubanio.com/simple/ -r requirements.txt

 

 

 

豆瓣：https://pypi.doubanio.com/simple/

pip3 install -i https://pypi.doubanio.com/simple/ selenium

easy_install -i https://pypi.doubanio.com/simple/ selenium

pip install -i https://pypi.doubanio.com/simple/ -r requirements.txt