错误pip不使用不同python版本的代理

我已经安装了python 2.7和3.9我的操作系统Windows 10如果我启动pip在python 2.7子文件夹的脚本中安装一个包，那么它会正常工作如果我尝试在其他位置安装，我会遇到以下错误：

pip install <package> --proxy http://myproxy:port/
ERROR: Exception:
Traceback (most recent call last):
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\cli\base_command.py", line 228, in _main
    status = self.run(options, args)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\cli\req_command.py", line 182, in wrapper
    return func(self, options, args)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\commands\install.py", line 323, in run
    requirement_set = resolver.resolve(
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\resolution\legacy\resolver.py", line 183, in resolve
    discovered_reqs.extend(self._resolve_one(requirement_set, req))
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\resolution\legacy\resolver.py", line 388, in _resolve_one
    abstract_dist = self._get_abstract_dist_for(req_to_install)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\resolution\legacy\resolver.py", line 339, in _get_abstract_dist_for
    self._populate_link(req)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\resolution\legacy\resolver.py", line 305, in _populate_link
    req.link = self._find_requirement_link(req)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\resolution\legacy\resolver.py", line 270, in _find_requirement_link
    best_candidate = self.finder.find_requirement(req, upgrade)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\index\package_finder.py", line 898, in find_requirement
    best_candidate_result = self.find_best_candidate(
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\index\package_finder.py", line 881, in find_best_candidate
    candidates = self.find_all_candidates(project_name)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\index\package_finder.py", line 825, in find_all_candidates
    package_links = self.process_project_url(
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\index\package_finder.py", line 790, in process_project_url
    html_page = self._link_collector.fetch_page(project_url)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\index\collector.py", line 643, in fetch_page
    return _get_html_page(location, session=self.session)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\index\collector.py", line 455, in _get_html_page
    resp = _get_html_response(url, session=session)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\index\collector.py", line 152, in _get_html_response
    resp = session.get(
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\requests\sessions.py", line 543, in get
    return self.request('GET', url, **kwargs)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_internal\network\session.py", line 421, in request
    return super(PipSession, self).request(method, url, *args, **kwargs)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\requests\sessions.py", line 530, in request
    resp = self.send(prep, **send_kwargs)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\requests\sessions.py", line 643, in send
    r = adapter.send(request, **kwargs)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\cachecontrol\adapter.py", line 53, in send
    resp = super(CacheControlAdapter, self).send(request, **kw)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\requests\adapters.py", line 412, in send
    conn = self.get_connection(request.url, proxies)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\requests\adapters.py", line 309, in get_connection
    proxy_manager = self.proxy_manager_for(proxy)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\requests\adapters.py", line 193, in proxy_manager_for
    manager = self.proxy_manager[proxy] = proxy_from_url(
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\urllib3\poolmanager.py", line 492, in proxy_from_url
    return ProxyManager(proxy_url=url, **kw)
  File "c:\users\linosa\appdata\local\programs\python\python39\lib\site-packages\pip\_vendor\urllib3\poolmanager.py", line 429, in __init__
    raise ProxySchemeUnknown(proxy.scheme)
pip._vendor.urllib3.exceptions.ProxySchemeUnknown: Not supported proxy scheme None

pip安装--代理http://myproxy:port/
错误：异常：
回溯（最近一次呼叫最后一次）：
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\cli\base\u command.py”，第228行，在主目录中
status=self.run（选项、参数）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\cli\req\u command.py”，第182行，在包装器中
返回函数（自身、选项、参数）
运行文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\commands\install.py”，第323行
需求集合=解析器.resolve(
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\resolution\legacy\resolver.py”，第183行，解析
发现的需求扩展（自我解决需求集）
文件“c:\users\linosa\appdata\local\programs\python\39\lib\site packages\pip\\u internal\resolution\legacy\resolver.py”，第388行，在“resolve\u one”中
abstract\u dist=self.\u获取（需要安装）的abstract\u dist\u
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\resolution\legacy\resolver.py”，第339行，位于
自填充链接（req）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\resolution\legacy\resolver.py”，第305行，在填充链接中
req.link=自寻需求链接（req）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\resolution\legacy\resolver.py”，第270行，在“查找需求”链接中
最佳候选人=self.finder.find需求（需求、升级）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\index\package\u finder.py”，第898行，在find\u需求中
最佳候选人结果=self.find\u最佳候选人(
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\index\package\u finder.py”，第881行，在find\u best\u候选者中
候选人=自我。查找所有候选人（项目名称）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\index\package\u finder.py”，第825行，在find\u all\u候选者中
包链接=self.process\u项目链接(
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\index\package\u finder.py”，第790行，进程中\u项目\u url
html\u page=self.\u link\u collector.fetch\u页面（项目url）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\index\collector.py”，第643行，在fetch\u页
return\u get\u html\u页面（位置，session=self.session）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\index\collector.py”，第455行，在html页面中
resp=\u get\u html\u响应（url，session=session）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\index\collector.py”，第152行，在“get\u html\u response”中
resp=session.get(
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u vendor\requests\sessions.py”，get第543行
返回self.request（'GET'，url，**kwargs）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u internal\network\session.py”，第421行，在请求中
返回super（PipSession，self）.request（方法，url，*args，**kwargs）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u vendor\requests\sessions.py”，请求中第530行
resp=自我发送（准备，**发送）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u vendor\requests\sessions.py”，第643行，在send中
r=适配器.send（请求，**kwargs）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u vendor\cachecontrol\adapter.py”，第53行，在send中
resp=super（CacheControlAdapter，self）.send（请求，**千瓦）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u vendor\requests\adapters.py”，第412行，在send中
conn=self.get\u连接（request.url，代理）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u vendor\requests\adapters.py”，第309行，在get\u connection中
proxy\u manager=self.proxy\u manager\u for（proxy）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u vendor\requests\adapters.py”，第193行，位于
manager=self.proxy\u manager[proxy]=proxy\u from\u url(
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u vendor\urllib3\poolmanager.py”，第492行，位于url中的proxy\u中
返回ProxyManager（代理url=url，**kw）
文件“c:\users\linosa\appdata\local\programs\python\python39\lib\site packages\pip\\u vendor\urllib3\poolmanager.py”，第429行，在uu init中__
提升ProxySchemeUnknown（proxy.scheme）
pip.\u vendor.urllib3.exceptions.ProxySchemeUnknown:不支持代理方案无

感谢你的帮助 提前谢谢

---

ciao

您的代理似乎未配置correctly@rdas它在2.7脚本文件夹中正常工作。您正在从python 3.9运行

pip

，而不是与python 2相关联的脚本。7@FlyingTeller这不是在Python3.9上安装软件包的正确方法吗？Thanks我以为您想在Python2.7上安装一个软件包代理地址中的斜杠：

--proxyhttp://myproxy:port