python - 更新后使用 pip (SSL WRONG_VERSION_NUMBER) 时出错

Question

我正在使用 pip 直接从提示安装一些 Python 包（如 Numpy）（我使用的是 Windows 机器）。然后我将 pip 从 19.0.3 更新到 21.0.1。

现在，当我尝试使用 pip 安装软件包时，我收到以下消息：

WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1076)'))': /simple/py-trees/ 
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1076)'))': /simple/py-trees/ 
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1076)'))': /simple/py-trees/ 
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1076)'))': /simple/py-trees/ 
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1076)'))': /simple/py-trees/
    
Could not fetch URL https://pypi.org/simple/py-trees/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/py-trees/ (Caused by SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1076)'))) - skipping
ERROR: Could not find a version that satisfies the requirement py_trees
ERROR: No matching distribution found for py_trees 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(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1076)'))) - skipping

为什么现在会发生这种情况？有人现在如何解决它？

谢谢！

标签： pythonpip