如何解决“由于EnvironmentError：HTTPSConnectionPool错误而无法安装软件包”的问题？

Question

我正在尝试安装jupyterthemes包时遇到了这个错误。

Collecting jupyterthemes
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProtocolError('Connection aborted.', ConnectionResetError(10054, 'An existing connection was forcibly closed by the remote host', None, 10054, None))': /packages/8a/08/9dee6dfd7f2aad6c30282d55c8f495b4dc1e4747b4e2bdbeb80572ddf312/jupyterthemes-0.20.0-py2.py3-none-any.whl
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProtocolError('Connection aborted.', ConnectionResetError(10054, 'An existing connection was forcibly closed by the remote host', None, 10054, None))': /packages/8a/08/9dee6dfd7f2aad6c30282d55c8f495b4dc1e4747b4e2bdbeb80572ddf312/jupyterthemes-0.20.0-py2.py3-none-any.whl
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProtocolError('Connection aborted.', ConnectionResetError(10054, 'An existing connection was forcibly closed by the remote host', None, 10054, None))': /packages/8a/08/9dee6dfd7f2aad6c30282d55c8f495b4dc1e4747b4e2bdbeb80572ddf312/jupyterthemes-0.20.0-py2.py3-none-any.whl
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProtocolError('Connection aborted.', ConnectionResetError(10054, 'An existing connection was forcibly closed by the remote host', None, 10054, None))': /packages/8a/08/9dee6dfd7f2aad6c30282d55c8f495b4dc1e4747b4e2bdbeb80572ddf312/jupyterthemes-0.20.0-py2.py3-none-any.whl
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProtocolError('Connection aborted.', ConnectionResetError(10054, 'An existing connection was forcibly closed by the remote host', None, 10054, None))': /packages/8a/08/9dee6dfd7f2aad6c30282d55c8f495b4dc1e4747b4e2bdbeb80572ddf312/jupyterthemes-0.20.0-py2.py3-none-any.whl
Could not install packages due to an EnvironmentError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Max retries exceeded with url: /packages/8a/08/9dee6dfd7f2aad6c30282d55c8f495b4dc1e4747b4e2bdbeb80572ddf312/jupyterthemes-0.20.0-py2.py3-none-any.whl (Caused by ProtocolError('Connection aborted.', ConnectionResetError(10054, 'An existing connection was forcibly closed by the remote host', None, 10054, None)))

- Yash

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你似乎在代理后面运行pip，如果是这样，请运行 pip --proxy "在此处输入代理" install jupyterthemes。 - Mohamed Ali JAMAOUI

Answer 1

看起来你需要添加可信主机。

查看此 GitHub 线程。

类似这样：

sudo pip install --trusted-host=pypi.python.org --trusted-host=pypi.org --trusted-host=files.pythonhosted.org --upgrade --proxy=127.0.0.1:3128 jupyterthemes

- VnC

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我无法使用此命令进行安装，因为出现了错误“代理URL没有方案，应该以http://或https://开头”。相反，为了使其正常工作，我使用了不带代理参数的命令：pip3 install --trusted-host=pypi.python.org --trusted-host=pypi.org --trusted-host=files.pythonhosted.org geopy。 - Noah Friedman

使用了--trusted-host=host.com，去掉了代理部分，问题解决了。 - gzcarlosrd

Answer 2

请检查日期是否设置正确。当时间和日期与服务器不同时，通常会出现此错误。

- Haroon Al Hadi

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我批准，这个程序在午夜后不久就出了问题。由于时区差异，我的本地时间与UTC不同步。 - tiborka

Answer 3

您可能已经安装了安全软件。在我的情况下，Zscaler通常是罪魁祸首，但其他安全软件也可能导致此错误被抛出。 VnC的答案通常是一个快速解决方案。请参见解释的永久性修复。

总之，您需要在Unix中创建一个配置文件pip.ini或pip.conf。您需要在文件中包含如下所示的受信任主机：

# for system-wide configuration file
[global]
trusted-host = pypi.python.org
               pypi.org
               raw.githubusercontent.com
               files.pythonhosted.org

# per-user configuration file
[user]
trusted-host = pypi.python.org
               pypi.org
               raw.githubusercontent.com
               files.pythonhosted.org

# per-virtualenv configuration file
[site]
trusted-host = pypi.python.org
               pypi.org
               raw.githubusercontent.com
               files.pythonhosted.org

我使用的是Windows操作系统。请参考文档获取您所使用操作系统的相关信息。

- Banty

Answer 4

对我来说，这是由于网络防火墙设置引起的问题，请尝试连接到其他网络并运行命令。这对我有用。

- Sharath Kumar

Answer 5

尝试设置代理。

set http_proxy=http://proxy.myproxy.com
set https_proxy=https://proxy.myproxy.com
python get-pip.py

- Manjunathan G

Answer 6

我认为有些包需要使用管理员权限来安装，在Mac上尝试以下操作：

sudo pip install

在Windows上：

你必须以管理员身份运行 cmd。

我的意思是右键单击cmd，选择

以管理员身份运行 然后 pip install 包名

- Hakim Asa