Python 安装pip时出错

我已经在Linux上安装了python2.7，我想在/path/to/python2.7.9/bin下安装pip。所以我这样做了：

> cd /path/to/setuptools-16.0
> /path/to/python2.7.9/bin/python setup.py install
> cd /path/to/pip-7.0.0
> /path/to/python2.7.9/bin/python setup.py install

然后将pip安装在/path/to/python2.7.9/bin下。但当我执行/path/to/python2.7.9/bin/pip时，它显示：

> ~/local/python-2.7.9/bin/pip
Traceback (most recent call last):
  File "/root/local/python-2.7.9/bin/pip", line 9, in <module>
    load_entry_point('pip==7.0.0', 'console_scripts', 'pip')()
  File "/root/local/python-2.7.9/lib/python2.7/site-packages/distribute-0.6.49-py2.7.egg/pkg_resources.py", line 345, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/root/local/python-2.7.9/lib/python2.7/site-packages/distribute-0.6.49-py2.7.egg/pkg_resources.py", line 2381, in load_entry_point
    return ep.load()
  File "/root/local/python-2.7.9/lib/python2.7/site-packages/distribute-0.6.49-py2.7.egg/pkg_resources.py", line 2087, in load
    entry = __import__(self.module_name, globals(),globals(), ['__name__'])
  File "/root/local/python-2.7.9/lib/python2.7/site-packages/pip-7.0.0-py2.7.egg/pip/__init__.py", line 15, in <module>
    from pip.vcs import git, mercurial, subversion, bazaar  # noqa
  File "/root/local/python-2.7.9/lib/python2.7/site-packages/pip-7.0.0-py2.7.egg/pip/vcs/subversion.py", line 9, in <module>
    from pip.index import Link
  File "/root/local/python-2.7.9/lib/python2.7/site-packages/pip-7.0.0-py2.7.egg/pip/index.py", line 30, in <module>
    from pip.wheel import Wheel, wheel_ext
  File "/root/local/python-2.7.9/lib/python2.7/site-packages/pip-7.0.0-py2.7.egg/pip/wheel.py", line 34, in <module>
    from pip._vendor.distlib.scripts import ScriptMaker
  File "/root/local/python-2.7.9/lib/python2.7/site-packages/pip-7.0.0-py2.7.egg/pip/_vendor/__init__.py", line 92, in load_module
    raise ImportError("No module named '%s'" % (name,))
ImportError: No module named 'pip._vendor.distlib.scripts'

我不知道怎么了，我该怎么办。你能帮助我吗？ 谢谢。

按照建议，尝试安装SSL支持

关于Debian：

apt-get -y install libssl-dev

在CentOS：

yum install openssl openssl-devel

如果libssl-dev不存在，请尝试：openssl-dev