阿里云：pip install package_name -i https://mirrors.aliyun.com/pypi/simple/
清华大学：pip install package_name -i https://pypi.tuna.tsinghua.edu.cn/simple
中国科学技术大学：pip install package_name -i https://pypi.mirrors.ustc.edu.cn/simple/
华为云：pip install package_name -i https://mirrors.huaweicloud.com/repository/pypi/simple/