title: installing requests module for python 2.7.13
body: <p>[Python-2.7]
  I was trying to install the requests module in python using the following commands </p>
  
  <blockquote>
    <blockquote>
      <blockquote>
        <p>import pip
        pip.main(['install', 'requests'])
        and I run in to these issues: </p>
      </blockquote>
    </blockquote>
  </blockquote>
  
  <pre><code>Exception:
  Traceback (most recent call last):
    File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in main
      status = self.run(options, args)
    File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 342, in run
      prefix=options.prefix_path,
    File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 784, in install
      **kwargs
    File "/usr/local/lib/python2.7/dist-packages/pip/req/req_install.py", line 851, in install
      self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
    File "/usr/local/lib/python2.7/dist-packages/pip/req/req_install.py", line 1064, in move_wheel_files
      isolated=self.isolated,
    File "/usr/local/lib/python2.7/dist-packages/pip/wheel.py", line 345, in move_wheel_files
      clobber(source, lib_dir, True)
    File "/usr/local/lib/python2.7/dist-packages/pip/wheel.py", line 316, in clobber
      ensure_dir(destdir)
    File "/usr/local/lib/python2.7/dist-packages/pip/utils/__init__.py", line 83, in ensure_dir
      os.makedirs(path)
    File "/usr/lib/python2.7/os.py", line 157, in makedirs
      mkdir(name, mode)
  OSError: [Errno 13] Permission denied: '/usr/local/lib/python2.7/dist-packages/certifi-2017.7.27.1.dist-info'
  2
  </code></pre>
  
  <p>Can anyone help me? I really appreciate it. </p>