转载一个pip安装virtualenvwrapper报错的解决办法

参考网站：http://blog.csdn.net/applewhithorange/article/details/52420390

我的报错内容：

Couldn't find index page for 'pbr' (maybe misspelled?)
    Download error on https://pypi.python.org/simple/: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645) -- Some packages may not be found!
    No local packages or download links found for pbr
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-6hblrn57/virtualenvwrapper/setup.py", line 7, in <module>
        pbr=True,
      File "/usr/lib/python3.5/distutils/core.py", line 108, in setup
        _setup_distribution = dist = klass(attrs)
      File "/usr/lib/python3/dist-packages/setuptools/dist.py", line 269, in __init__
        self.fetch_build_eggs(attrs['setup_requires'])
      File "/usr/lib/python3/dist-packages/setuptools/dist.py", line 313, in fetch_build_eggs
        replace_conflicting=True,
      File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 826, in resolve
        dist = best[req.key] = env.best_match(req, ws, installer)
      File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 1092, in best_match
        return self.obtain(req, installer)
      File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 1104, in obtain
        return installer(requirement)
      File "/usr/lib/python3/dist-packages/setuptools/dist.py", line 380, in fetch_build_egg
        return cmd.easy_install(req)
      File "/usr/lib/python3/dist-packages/setuptools/command/easy_install.py", line 657, in easy_install
        raise DistutilsError(msg)
    distutils.errors.DistutilsError: Could not find suitable distribution for Requirement.parse('pbr')
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-6hblrn57/virtualenvwrapper/

解决办法：

sudo pip install -i https://pypi.tuna.tsinghua.edu.cn/simple pbr
sudo pip install -i https://pypi.tuna.tsinghua.edu.cn/simple --no-deps stevedore
sudo pip install -i https://pypi.tuna.tsinghua.edu.cn/simple --no-deps virtualenvwrapper