卸载并安装了 python，现在面临 pip 问题 [英] Uninstalled and installed python and now facing issues with pip

问题描述

我用的是 mac，最近从 python2 切换到 python3.发布后，由于某些依赖性问题，我无法在笔记本电脑上安装 jupyter.经过大量的试验和错误，我只是卸载了 Python 3 并使用 brew 安装它.

我使用以下指南卸载1、2.>

发布我再次安装了 jupyter，现在我面临这个问题:

$ pip install --index-url '..' --trusted-host '..' jupyter

这就是我通常在防火墙后面的笔记本电脑上安装软件包的方式，并且可以正常工作.但现在我收到以下异常:

错误:异常:回溯(最近一次调用最后一次):文件/usr/local/lib/python3.7/site-packages/pip/_internal/cli/base_command.py"，第 153 行，在 _mainstatus = self.run(options, args)运行中的文件/usr/local/lib/python3.7/site-packages/pip/_internal/commands/install.py"，第 382 行resolver.resolve(requirement_set)文件/usr/local/lib/python3.7/site-packages/pip/_internal/legacy_resolve.py"，第201行，解析self._resolve_one(requirement_set, req)文件/usr/local/lib/python3.7/site-packages/pip/_internal/legacy_resolve.py"，第 365 行，在 _resolve_oneabstract_dist = self._get_abstract_dist_for(req_to_install)文件/usr/local/lib/python3.7/site-packages/pip/_internal/legacy_resolve.py"，第 311 行，在 _get_abstract_dist_forreq.populate_link(self.finder, upgrade_allowed, self.require_hashes)文件/usr/local/lib/python3.7/site-packages/pip/_internal/req/req_install.py"，第225行，在populate_linkself.link = finder.find_requirement(self, upgrade)find_requirement 中的文件/usr/local/lib/python3.7/site-packages/pip/_internal/index.py"，第 879 行req.name，说明符=req.specifier，散列=散列，文件/usr/local/lib/python3.7/site-packages/pip/_internal/index.py"，第 861 行，在 find_best_candidate候选人 = self.find_all_candidates(project_name)文件/usr/local/lib/python3.7/site-packages/pip/_internal/index.py"，第 791 行，在 find_all_candidatescollect_links = self._link_collector.collect_links(project_name)文件/usr/local/lib/python3.7/site-packages/pip/_internal/collector.py"，第541行，在collect_links对于 self._get_pages(url_locations) 中的页面:文件/usr/local/lib/python3.7/site-packages/pip/_internal/collector.py"，第 493 行，在 _get_pagespage = _get_html_page(location, session=self.session)文件/usr/local/lib/python3.7/site-packages/pip/_internal/collector.py"，第 339 行，在 _get_html_pageresp = _get_html_response(url, session=session)文件/usr/local/lib/python3.7/site-packages/pip/_internal/collector.py"，第 146 行，在 _get_html_response"缓存控制": "max-age=0",文件/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/sessions.py"，第546行，在get返回 self.request('GET', url, **kwargs)文件/usr/local/lib/python3.7/site-packages/pip/_internal/network/session.py"，第 426 行，请求return super(PipSession, self).request(method, url, *args, **kwargs)文件/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/sessions.py"，第533行，请求resp = self.send(prep, **send_kwargs)文件/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/sessions.py"，第646行，发送r = adapter.send(request, **kwargs)文件/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/adapters.py"，第412行，发送conn = self.get_connection(request.url, proxies)文件/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/adapters.py"，第 309 行，在 get_connection 中proxy_manager = self.proxy_manager_for(proxy)文件/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/adapters.py"，第 199 行，在 proxy_manager_for**proxy_kwargs)文件/usr/local/lib/python3.7/site-packages/pip/_vendor/urllib3/poolmanager.py"，第470行，在proxy_from_url返回 ProxyManager(proxy_url=url, **kw)文件/usr/local/lib/python3.7/site-packages/pip/_vendor/urllib3/poolmanager.py"，第420行，在__init__提高 ProxySchemeUnknown(proxy.scheme)pip._vendor.urllib3.exceptions.ProxySchemeUnknown:不支持代理方案无

我已经设置了代理，可以使用 env 看到它.我也试过:

export http_proxy="http://:"导出 https_proxy="https://<主机名>:<端口>"

似乎没有任何效果.

任何建议都会有所帮助.

解决方案

最后，帮助的是unset https_proxy http_proxy.

I use a mac and I switched from python2 to python3 recently. Post doing that I couldn't install jupyter on my laptop due to some dependency issues. After a lot of trial and errors, I just uninstalled Python 3 and installed it with brew instead.

I used the following guides to uninstall 1, 2.

Post that I installed jupyter again and now I'm facing this issue:

$ pip install --index-url '..' --trusted-host '..' jupyter

This is how I usually install packages on my laptop behind a firewall and it works. But now I'm getting the following exception:

ERROR: Exception:
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/cli/base_command.py", line 153, in _main
    status = self.run(options, args)
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/commands/install.py", line 382, in run
    resolver.resolve(requirement_set)
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/legacy_resolve.py", line 201, in resolve
    self._resolve_one(requirement_set, req)
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/legacy_resolve.py", line 365, in _resolve_one
    abstract_dist = self._get_abstract_dist_for(req_to_install)
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/legacy_resolve.py", line 311, in _get_abstract_dist_for
    req.populate_link(self.finder, upgrade_allowed, self.require_hashes)
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/req/req_install.py", line 225, in populate_link
    self.link = finder.find_requirement(self, upgrade)
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/index.py", line 879, in find_requirement
    req.name, specifier=req.specifier, hashes=hashes,
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/index.py", line 861, in find_best_candidate
    candidates = self.find_all_candidates(project_name)
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/index.py", line 791, in find_all_candidates
    collected_links = self._link_collector.collect_links(project_name)
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/collector.py", line 541, in collect_links
    for page in self._get_pages(url_locations):
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/collector.py", line 493, in _get_pages
    page = _get_html_page(location, session=self.session)
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/collector.py", line 339, in _get_html_page
    resp = _get_html_response(url, session=session)
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/collector.py", line 146, in _get_html_response
    "Cache-Control": "max-age=0",
  File "/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/sessions.py", line 546, in get
    return self.request('GET', url, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/pip/_internal/network/session.py", line 426, in request
    return super(PipSession, self).request(method, url, *args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/sessions.py", line 533, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/sessions.py", line 646, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/adapters.py", line 412, in send
    conn = self.get_connection(request.url, proxies)
  File "/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/adapters.py", line 309, in get_connection
    proxy_manager = self.proxy_manager_for(proxy)
  File "/usr/local/lib/python3.7/site-packages/pip/_vendor/requests/adapters.py", line 199, in proxy_manager_for
    **proxy_kwargs)
  File "/usr/local/lib/python3.7/site-packages/pip/_vendor/urllib3/poolmanager.py", line 470, in proxy_from_url
    return ProxyManager(proxy_url=url, **kw)
  File "/usr/local/lib/python3.7/site-packages/pip/_vendor/urllib3/poolmanager.py", line 420, in __init__
    raise ProxySchemeUnknown(proxy.scheme)
pip._vendor.urllib3.exceptions.ProxySchemeUnknown: Not supported proxy scheme None

I have set the proxy and it can be seen using env. I've also tried:

export http_proxy="http://<hostname>:<port>"
export https_proxy="https://<hostname>:<port>"

Nothing seems to be working.

Any suggestions would be helpful.

解决方案

In the end, what helped was unset https_proxy http_proxy.

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