我正在使用pip install flask命令安装Flask 。
有人可以帮我吗？
安装软件包时，出现以下错误和警告：
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate is not yet valid (_ssl.c:1123)'))': /packages/7f/17/16267e782a30ea2ce08a9a452c1db285afb0ff226cfe3753f484d3d65662/Django-3.1.3-py3-none-any.whl
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate is not yet valid (_ssl.c:1123)'))': /packages/7f/17/16267e782a30ea2ce08a9a452c1db285afb0ff226cfe3753f484d3d65662/Django-3.1.3-py3-none-any.whl
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate is not yet valid (_ssl.c:1123)'))': /packages/7f/17/16267e782a30ea2ce08a9a452c1db285afb0ff226cfe3753f484d3d65662/Django-3.1.3-py3-none-any.whl
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate is not yet valid (_ssl.c:1123)'))': /packages/7f/17/16267e782a30ea2ce08a9a452c1db285afb0ff226cfe3753f484d3d65662/Django-3.1.3-py3-none-any.whl
ERROR: Could not install packages due to an EnvironmentError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Max retries exceeded with url: /packages/7f/17/16267e782a30ea2ce08a9a452c1db285afb0ff226cfe3753f484d3d65662/Django-3.1.3-py3-none-any.whl (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate is not yet valid (_ssl.c:1123)'))) ```
看来您与服务器的连接速度很慢。尝试增加超时时间：
export PIP_DEFAULT_TIMEOUT=120
然后做点子安装。您也可以尝试：
sudo pip install --default-timeout=120 flask
或者，如果您要在具有防火墙的公司网络上进行安装，是否可以连接到另一个WiFi或热点，然后再次尝试下载？
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我来说两句