title: pip installation error "No such file or directory: setup.py"
body: <p>I'm getting installation error because pip couldn't find setup.py.</p>
  
  <pre class="lang-sh prettyprint-override"><code>sudo pip install https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.5.0-cp27-none-linux_x86_64.whl
  </code></pre>
  
  <p>I get this error message.</p>
  
  <pre class="lang-sh prettyprint-override"><code>Downloading/unpacking https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.5.0-cp27-none-linux_x86_64.whl
  Downloading tensorflow-0.5.0-cp27-none-linux_x86_64.whl (10.9Mb): 10.9Mb downloaded
  Running setup.py egg_info for package from https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.5.0-cp27-none-linux_x86_64.whl
  Traceback (most recent call last):
  File "&lt;string&gt;", line 14, in &lt;module&gt;
  IOError: [Errno 2] No such file or directory: '/tmp/pip-GdGgbz-build/setup.py'
  Complete output from command python setup.py egg_info:
  Traceback (most recent call last):
  
  File "&lt;string&gt;", line 14, in &lt;module&gt;
  
  IOError: [Errno 2] No such file or directory: '/tmp/pip-GdGgbz-build/setup.py'
  </code></pre>
  
  <p>Can anyone tell me how to solve this problem?</p>
  
  <p>Thanks.</p>