Python 警告：重试（重试（总计=4，连接=无，读取=无，重定向=无，状态=无））

Question

我正在尝试执行pip install --upgrade pip并不断
收到此错误：

WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnection
Error('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x0000026F50B448C8>: Failed to establish a new connection: [WinError 10061] No connection could be made
 because the target machine actively refused it'))': /simple/pytest/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnection
Error('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x0000026F50B59148>: Failed to establish a new connection: [WinError 10061] No connection could be made
 because the target machine actively refused it'))': /simple/pytest/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnection
Error('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x0000026F50B596C8>: Failed to establish a new connection: [WinError 10061] No connection could be made
 because the target machine actively refused it'))': /simple/pytest/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnection
Error('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x0000026F50B595C8>: Failed to establish a new connection: [WinError 10061] No connection could be made
 because the target machine actively refused it'))': /simple/pytest/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnection
Error('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x0000026F50B5F2C8>: Failed to establish a new connection: [WinError 10061] No connection could be made
 because the target machine actively refused it'))': /simple/pytest/
ERROR: Could not find a version that satisfies the requirement pytest
ERROR: No matching distribution found for pytest

另外，由于此错误，我无法安装任何新软件包。
我尝试重新安装 Pycharm 但没有成功。
我在网上尝试了一些其他建议的解决方案 - 仍然没有运气。
我知道它与 Proxy 有关，但我不熟悉它，有人吗？

Answer 1

尝试使用--network=host附加构建命令
\nEg ：docker build -t cointainer_name . --network=host

\n

If you use the host network mode for a container, that container\xe2\x80\x99s network stack is not isolated from the \nDocker host (the container shares the host\xe2\x80\x99s networking namespace), and the container does not \nget its own IP-address allocated. \nFor instance, if you run a container which binds to port 80 and you use host \nnetworking, the container\xe2\x80\x99s application is available on port 80 on the host\xe2\x80\x99s IP address.\n

\n

检查这里了解更多详情

\n

Answer 2

TL;DR 对于 Windows，这对我有用。

1. Windows+ I（打开“设置”）。
2. 选择Network & Internet
3. 选择Proxy
4. 检查Manual proxy setup是否处于Off- 位置

---一切都已经开始在这里工作了---

5. 注：Automatically detect settings切换至On或 至Off对我没有影响（一切仍然继续工作，因为它在4.之后开始工作）。

前言

我有同样的错误。无法安装由pip、 由pipenv、 由 anaconda 、 由 PyCharm 提供的库。然后我检查了Proxy设置（Windows 11 操作系统）并注意到我有一些Manual proxy setup定义。当禁用它时 - 问题得到解决。

问题非常自发地开始：我做了一些 python 工作，做了一些安装（可能是一些带有pipenv笔记本或 jupyter-lab、cygwin工具等的 Pithon 模块），然后安装/更新 python 模块崩溃了。也许某些安装更改了代理参数？我不知道。
Python 重新安装没有帮助。

错误示例

例如，安装/更新时的 anaconda 错误如下所示：

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://repo.anaconda.com/pkgs/main/win-64/current_repodata.json>
Elapsed: -

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent, and a simple retry will get you on your way.

If your current network has https://www.anaconda.com blocked, please file
a support request with your network engineering team.

'https://repo.anaconda.com/pkgs/main/win-64'

安装/更新时的 Pip 错误如下所示：

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://repo.anaconda.com/pkgs/main/win-64/current_repodata.json>
Elapsed: -

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent, and a simple retry will get you on your way.

If your current network has https://www.anaconda.com blocked, please file
a support request with your network engineering team.

'https://repo.anaconda.com/pkgs/main/win-64'

>>>
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', FileNotFoundError(2, 'No such file or directory'))': /simple/pip/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', FileNotFoundError(2, 'No such file or directory'))': /simple/pip/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', FileNotFoundError(2, 'No such file or directory'))': /simple/pip/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', FileNotFoundError(2, 'No such file or directory'))': /simple/pip/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', FileNotFoundError(2, 'No such file or directory'))': /simple/pip/