最近写了一篇关于“微软开源分布式高性能GB框架LightGBM安装使用”的文章，有小伙伴安装Python环境遇到了问题。我个人也尝试安装了一下，确实遇到了很多问题。这不又遇到;设置pip 镜像 Pip Warning：–trusted-host 问题。
pip升级到7.0以后，在使用http镜像进行包安装及升级的时候往往会有如下提示：
Collecting beautifulsoup4 The repository located at mirrors.aliyun.com is not a trusted or secure host and is being ignored. If this repository is available via HTTPS it is recommended to use HTTPS instead, otherwise you may silence this warning and allow it anyways with ‘–trusted-host mirrors.aliyun.com’. Could not find a version that satisfies the requirement beautifulsoup4 (from versions: ) No matching distribution found for beautifulsoup4解决办法如下：
1.安装时加入“--trusted-host=mirrors.aliyun.com”参数：
pip install beautifulsoup4 --trusted-host=mirrors.aliyun.com2.在pip.ini中加入trusted-host选项，该方法是一劳永逸
[global]
index-url = http://mirrors.aliyun.com/pypi/simple/
[install]
trusted-host=mirrors.aliyun.com
"pip.ini"文件在哪？
======================文档信息======================
版权声明：非商用自由转载-保持署名-注明出处
署名(BY) ：testcs_dn(微wx笑)
文章出处：[无知人生，记录点滴](http://blog.csdn.net/testcs_dn)
