pip

pip换源

临时

pip install xxxx -i https://pypi.tuna.tsinghua.edu.cn/simple

全局

pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple

# 清华源: pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple  
# 豆瓣源: pip config set global.index-url http://pypi.douban.com/simple/  
# 腾讯源: pip config set global.index-url http://mirrors.cloud.tencent.com/pypi/simple  
# 阿里源: pip config set global.index-url https://mirrors.aliyun.com/pypi/simple/

pip的常用命令

查看pip版本

pip --version

升级pip

python -m pip install --upgrade pip

查看已安装的库

pip list

安装库

pip install arrow
pip install arrow=1.2.2
pip install arrow,requests

卸载库

pip uninstall arrow

生成requirements.txt

pip freeze > requirements.txt

还原requirements.txt

pip install -r requirements.txt