How to resolve SSL certificate issue with HTTPSConnectionPool to pypi.org?

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在安装pytest-时遇到错误：无法获取URL https://pypi.org/simple/pytest-/：确认SSL证书时出现问题：HTTPSConnectionPool（host='pypi.org', port=443）：超过最大重试次数。

在安装pytest-html是报错了：

Could not fetch URL pypi.org/simple/pytest-html/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded
with url: /simple/pytest-html/ (Caused by SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:997)'))) - skipping
ERROR: Could not find a version that satisfies the requirement pytest-html (from versions: none)
ERROR: No matching distribution found for pytest-html
WARNING: You are using pip version 21.3.1; however, version 22.0.4 is available.
You should consider upgrading via the 'C:\Programs\Python\Python310\python.exe -m pip install --upgrade pip' command.

确认SSL证书时出现问题，我开始选择网上的办法，选择信任该网站再下载：

pip install --trusted-host pypi.org pytest-html

还是不行，提示“Cannot connect to proxy.”无法连接到代理。

我想了想，emm傻逼了，忘记我开了全局的代理。关掉就可以了