title: Scrapy Installation Error on OSX
body: <p>I am trying to install the web crawling framework Scrapy with the terminal command: </p>
  
  <pre><code>pip install scrapy
  </code></pre>
  
  <p>and it begins installing and then gives me the following error:</p>
  
  <pre><code>Exception:
  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 342, in run
  prefix=options.prefix_path,
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_set.py", line 784, in install
  **kwargs
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_install.py", line 851, in install
  self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_install.py", line 1064, in move_wheel_files
  isolated=self.isolated,
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/wheel.py", line 345, in move_wheel_files
  clobber(source, lib_dir, True)
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/wheel.py", line 316, in clobber
  ensure_dir(destdir)
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/utils/__init__.py", line 83, in ensure_dir
  os.makedirs(path)
  File       "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 157, in makedirs
  mkdir(name, mode)
  OSError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/pyasn1'
  </code></pre>
  
  <p>When I try to install with sudo I get the following: </p>
  
  <pre><code>"OSError: [Errno 1] Operation not permitted: '/tmp/pip-kEkq_9-uninstall/System/Library/Frameworks/Python.‌framework/Versions/2‌.7/Extras/lib/python‌​/six-1.4.1-py2.7.egg‌​-info'" 
  </code></pre>
  
  <p>When I install using a virtual environment in the project folder and try to import the library, it does not recognize the module.</p>
  
  <p>I am unable to discern what I should do to fix this. Any suggestions?</p>