Python 在Mac OS X上安装pip时出错

我试图使用Python2.6版在MacOSX系统上安装pip，但出现以下错误

$ python /tmp/get-pip.py 
/tmp/tmpzyN3Si/pip.zip/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
Collecting pip
/tmp/tmpzyN3Si/pip.zip/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
Exception:
Traceback (most recent call last):
  File "/tmp/tmpLZAZtY/pip.zip/pip/basecommand.py", line 223, in main
    status = self.run(options, args)
  File "/tmp/tmpLZAZtY/pip.zip/pip/commands/install.py", line 280, in run
    requirement_set.prepare_files(finder)
  File "/tmp/tmpLZAZtY/pip.zip/pip/req/req_set.py", line 317, in prepare_files
    functools.partial(self._prepare_file, finder))
  File "/tmp/tmpLZAZtY/pip.zip/pip/req/req_set.py", line 304, in _walk_req_to_install
    more_reqs = handler(req_to_install)
  File "/tmp/tmpLZAZtY/pip.zip/pip/req/req_set.py", line 439, in _prepare_file
    req_to_install.populate_link(finder, self.upgrade)
  File "/tmp/tmpLZAZtY/pip.zip/pip/req/req_install.py", line 244, in populate_link
    self.link = finder.find_requirement(self, upgrade)
  File "/tmp/tmpLZAZtY/pip.zip/pip/index.py", line 486, in find_requirement
    all_versions = self._find_all_versions(req.name)
  File "/tmp/tmpLZAZtY/pip.zip/pip/index.py", line 404, in _find_all_versions
    index_locations = self._get_index_urls_locations(project_name)
  File "/tmp/tmpLZAZtY/pip.zip/pip/index.py", line 378, in _get_index_urls_locations
    page = self._get_page(main_index_url)
  File "/tmp/tmpLZAZtY/pip.zip/pip/index.py", line 810, in _get_page
    return HTMLPage.get_page(link, session=self.session)
  File "/tmp/tmpLZAZtY/pip.zip/pip/index.py", line 920, in get_page
    "Cache-Control": "max-age=600",
  File "/tmp/tmpLZAZtY/pip.zip/pip/_vendor/requests/sessions.py", line 477, in get
    return self.request('GET', url, **kwargs)
  File "/tmp/tmpLZAZtY/pip.zip/pip/download.py", line 373, in request
    return super(PipSession, self).request(method, url, *args, **kwargs)
  File "/tmp/tmpLZAZtY/pip.zip/pip/_vendor/requests/sessions.py", line 465, in request
    resp = self.send(prep, **send_kwargs)
  File "/tmp/tmpLZAZtY/pip.zip/pip/_vendor/requests/sessions.py", line 573, in send
    r = adapter.send(request, **kwargs)
  File "/tmp/tmpLZAZtY/pip.zip/pip/_vendor/cachecontrol/adapter.py", line 36, in send
    cached_response = self.controller.cached_request(request)
  File "/tmp/tmpLZAZtY/pip.zip/pip/_vendor/cachecontrol/controller.py", line 102, in cached_request
    resp = self.serializer.loads(request, self.cache.get(cache_url))
  File "/tmp/tmpLZAZtY/pip.zip/pip/_vendor/cachecontrol/serialize.py", line 108, in loads
    return getattr(self, "_loads_v{0}".format(ver))(request, data)
  File "/tmp/tmpLZAZtY/pip.zip/pip/_vendor/cachecontrol/serialize.py", line 184, in _loads_v2
    return self.prepare_response(request, cached)
  File "/tmp/tmpLZAZtY/pip.zip/pip/_vendor/cachecontrol/serialize.py", line 145, in prepare_response
    **cached["response"]
TypeError: __init__() keywords must be strings

然后我用python2.6试了一下：

python2.6 /tmp/get-pip.py
/tmp/tmpI57ALq/pip.zip/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
You are using pip version 7.0.3, however version 7.1.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Collecting pip
/tmp/tmpI57ALq/pip.zip/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  Downloading pip-7.1.2-py2.py3-none-any.whl (1.1MB)
    100% |################################| 1.1MB 303kB/s 
Collecting setuptools
  Downloading setuptools-18.3.1-py2.py3-none-any.whl (462kB)
    100% |################################| 462kB 723kB/s 
Collecting wheel
  Downloading wheel-0.24.0-py2.py3-none-any.whl (63kB)
    100% |################################| 65kB 3.6MB/s 
Collecting argparse (from wheel)
  Downloading argparse-1.3.0-py2.py3-none-any.whl
Installing collected packages: pip, setuptools, argparse, wheel
Successfully installed argparse-1.3.0 pip-7.1.2 setuptools-18.3.1 wheel-0.24.0

但当我尝试使用pip命令时，却找不到它

$  which pip
pip not found

当我再次运行python2.6时，我得到以下结果：

python2.6 /tmp/get-pip.py
You are using pip version 7.0.3, however version 7.1.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
/tmp/tmpCu8MaZ/pip.zip/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
Requirement already up-to-date: pip in /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages

我已经读到，pip安装请求[安全]可以解决这个问题，但首先我需要安装pip才能安装这些软件包

编辑： 这似乎是一个与Python2.6.1相关的bug。

---

我用自制软件安装了较新版本的Python（2.7.10），并使用easy_install安装了pip。然后我添加了path/usr/local/bin以获得优先权，pip现在安装包。不过，我不确定对pip使用非本机python是否合适。

您是否尝试过

easy\u install

这里有一个简单的解决方案

首先，确保安装了

Python

。怎么用？打开终端并运行以下命令

python --version

sudo easy_install pip

如果此命令返回一个版本号，则表示python已经安装。这也意味着您已经可以访问

easy\u install

，因为您正在使用

OSX

现在，您所要做的就是运行以下命令

python --version

sudo easy_install pip

之后，将安装

pip

，您可以使用它安装其他软件包

干杯！

---

让我知道这种安装pip的方式是否适合您 重新安装Python，然后它就可以工作了。Pip是在系统上安装Python时预先安装的。

您是否已经尝试过

Python-m Pip install requests[security]

？@cel我刚刚尝试过，它返回

未找到匹配项：requests[security]

错误是由于zsh语法造成的，我成功地安装了Pip，并使用

Pip install'请求[security]“

它仍然返回不安全的PlatformWarning…在mac os 10.12.3上工作，而在其他地方找到的指令没有。