安裝hotqueue，設定版本為0.2.7

pip install hotqueue==0.2.7

報錯：

Collecting hotqueue==0.2.7
  Using cached https://files.pythonhosted.org/packages/47/de/82a9c325689ed0595f5ad7dcea7f8822402647c99f0e3bf9d1d089d62fb4/hotqueue-0.2.7.tar.gz
    Complete output from command python setup.py egg_info:
    Downloading http://pypi.python.org/packages/source/d/distribute/distribute-0.6
 
.14.tar.gz
dj-database-url==0.4.2
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-t9Wb7R/hotqueue/setup.py", line 7, in <module>
        from distribute_setup import use_setuptools; use_setuptools()
      File "distribute_setup.py"
 
, line 145, in use_setuptools
        return _do_download(version, download_base, to_dir, download_delay)
      File "distribute_setup.py", line 124, in _do_download
        to_dir, download_delay)
      File "distribute_setup.py", line 193, in download_setuptools
        src = urlopen(url)
      File "/usr/lib64/python2.7/urllib2.py"
 
, line 154, in urlopen
        return opener.open(url, data, timeout)
      File "/usr/lib64/python2.7/urllib2.py", line 437, in open
        response = meth(req, response)
      File "/usr/lib64/python2.7/urllib2.py", line 550, in http_response
        'http', request, response, code, msg, hdrs)
      File "/usr/lib64/python2.7/urllib2.py", line 475, in error
        return self._call_chain(*args)
      File "/usr/lib64/python2.7/urllib2.py", line 409, in _call_chain
        result = func(*args)
      File "/usr/lib64/python2.7/urllib2.py", line 558, in http_error_default
        raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
    urllib2.HTTPError: HTTP Error 403: SSL is required

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-t9Wb7R/hotqueue/
You are using pip version 9.0.1, however version 10.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

解決方案：
因為pypi問題導致，解決方案是安裝0.2.8版本，這個版本跟0.2.7是一樣的

pip install hotqueue==0.2.8

參考