Question

在pycharm中安装任何python软件包时。出现以下错误：- 收集py2neo

Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fb8e2e15780>: Failed to establish a new connection: [Errno 111] Connection refused',))': /simple/py2neo/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fb8e2e155f8>: Failed to establish a new connection: [Errno 111] Connection refused',))': /simple/py2neo/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fb8e2e15898>: Failed to establish a new connection: [Errno 111] Connection refused',))': /simple/py2neo/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fb8e2e154a8>: Failed to establish a new connection: [Errno 111] Connection refused',))': /simple/py2neo/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x7fb8e2e15400>: Failed to establish a new connection: [Errno 111] Connection refused',))': /simple/py2neo/
  Could not find a version that satisfies the requirement py2neo (from versions: )
No matching distribution found for py2neo

Answer 1

我在公司代理后面的Docker容器中遇到了完全相同的错误。无论我要安装哪个软件包。

我可以将其固定为以下内容：

一旦设置了任何代理环境变量（https_proxy或HTTPS_PROXY），我就会收到此错误。奇怪的是，这是否是正确的代理并不重要。另外，我体验到，当设置了这些变量之一时，pip似乎会忽略我在安装过程中通过--proxy开关传递的信息。

我通过以下变通办法使它正常工作：

确保既未设置https_proxy（小写），又未设置HTTPS_PROXY（大写）环境var。
使用以下命令运行pip安装

pip3 --proxy=http://<proxyHost>:<proxyPort> install  py2neo

尽管此变通办法对我有效，但我仍然有兴趣为此找到解决方法，

我真的很好奇那里发生的事情
不得不在Dockerfile内部的命令中指定代理有点烦人

'ProxyError（'无法连接到代理。'，NewConnectionError

1 个答案: