win10安装flet失败

0、首先升级pip

python -m pip install --upgrade pip

1、 在win10上安装失败：pip install flet
ERROR: Could not find a version that satisfies the requirement flet (from versions: none)
ERROR: No matching distribution found for flet
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping

 2、通过百度解决办法：

pip install flet -i http://pypi.douban.com/simple --trusted-host pypi.douban.com

Successfully installed beartype-0.10.4 flet-0.1.52 repath-0.9.0 websocket-client-1.3.3

 3、还可以使用其他镜像源

1)http://mirrors.aliyun.com/pypi/simple/ 阿里云
2)https://pypi.mirrors.ustc.edu.cn/simple/ 中国科技大学
3)http://pypi.douban.com/simple/ 豆瓣
4)https://pypi.tuna.tsinghua.edu.cn/simple/ 清华大学
5)http://pypi.mirrors.ustc.edu.cn/simple/ 中国科学技术大学