title: Unable to install Python libraries
body: <p>I am not able to install any Python libraries. I am using <code>pip 9.0.1</code> and <code>python 2.7</code>. I am getting the following error:</p>
  
  <pre><code>EN-NishantS:~ 8417$ pip install presto-python-client
  Collecting presto-python-client
    Could not find a version that satisfies the requirement presto-python-client (from versions: )
  No matching distribution found for presto-python-client
  </code></pre>
  
  <p>On running with <code>pip install -vvv</code> I am getting the following:</p>
  
  <pre><code>Collecting presto-python-client
    1 location(s) to search for versions of presto-python-client:
    * https://pypi.python.org/simple/presto-python-client/
    Getting page https://pypi.python.org/simple/presto-python-client/
    Looking up "https://pypi.python.org/simple/presto-python-client/" in the cache
    No cache entry available
    Starting new HTTPS connection (1): pypi.python.org
    "GET /simple/presto-python-client/ HTTP/1.1" 403 170
    Status code 403 not in [200, 203, 300, 301]
    Could not fetch URL https://pypi.python.org/simple/presto-python-client/: 403 Client Error: TLSv1.2+ is required for url: https://pypi.python.org/simple/presto-python-client/ - skipping
    Could not find a version that satisfies the requirement presto-python-client (from versions: )
  Cleaning up...
  No matching distribution found for presto-python-client
  Exception information:
  Traceback (most recent call last):
    File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/basecommand.py", line 215, in main
      status = self.run(options, args)
    File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/commands/install.py", line 324, in run
      requirement_set.prepare_files(finder)
    File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_set.py", line 380, in prepare_files
      ignore_dependencies=self.ignore_dependencies))
    File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_set.py", line 554, in _prepare_file
      require_hashes
    File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_install.py", line 278, in populate_link
      self.link = finder.find_requirement(self, upgrade)
    File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/index.py", line 514, in find_requirement
      'No matching distribution found for %s' % req
  DistributionNotFound: No matching distribution found for presto-python-client
  Looking up "https://pypi.python.org/pypi/pip/json" in the cache
  No cache entry available
  Starting new HTTPS connection (1): pypi.python.org
  "GET /pypi/pip/json HTTP/1.1" 403 170
  Status code 403 not in [200, 203, 300, 301]
  There was an error checking the latest version of pip
  Traceback (most recent call last):
    File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/utils/outdated.py", line 128, in pip_version_check
      resp.raise_for_status()
    File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/_vendor/requests/models.py", line 862, in raise_for_status
      raise HTTPError(http_error_msg, response=self)
  HTTPError: 403 Client Error: TLSv1.2+ is required for url: https://pypi.python.org/pypi/pip/json
  </code></pre>