title: PermissionError: [Errno 13] Permission denied: 'C:\\Program Files\\Python35\\Lib\\site-packages\\six.py'
body: <p>I am using python 3.5.3, and now I want to install pandas and numpy but not able to, following is the error in cmd, anyone can help me?</p>
  
  <pre><code> C:\Program Files\Python35\Scripts&gt;py -3.5 -m pip install pandas 
  
  Collecting pandas
  Using cached pandas-0.20.1-cp35-cp35m-win_amd64.whl
  Collecting python-dateutil&gt;=2 (from pandas)
  Using cached python_dateutil-2.6.0-py2.py3-none-any.whl
  Collecting numpy&gt;=1.7.0 (from pandas)
  Using cached numpy-1.12.1-cp35-none-win_amd64.whl
  Collecting pytz&gt;=2011k (from pandas)
  Using cached pytz-2017.2-py2.py3-none-any.whl
  Collecting six&gt;=1.5 (from python-dateutil&gt;=2-&gt;pandas)
  Using cached six-1.10.0-py2.py3-none-any.whl
  Installing collected packages: six, python-dateutil, numpy, pytz, pandas
  Exception:
  Traceback (most recent call last):
  File "C:\Program Files\Python35\lib\site-packages\pip\basecommand.py", line 215, in main
  status = self.run(options, args)
  File "C:\Program Files\Python35\lib\site-packages\pip\commands\install.py", line 342, in run
  prefix=options.prefix_path,
  File "C:\Program Files\Python35\lib\site-packages\pip\req\req_set.py", line 784, in install
  **kwargs
  File "C:\Program Files\Python35\lib\site-packages\pip\req\req_install.py", line 851, in install
  self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
  File "C:\Program Files\Python35\lib\site-packages\pip\req\req_install.py", line 1064, in move_wheel_files
  isolated=self.isolated,
  File "C:\Program Files\Python35\lib\site-packages\pip\wheel.py", line 345, in move_wheel_files
  clobber(source, lib_dir, True)
  File "C:\Program Files\Python35\lib\site-packages\pip\wheel.py", line 323, in clobber
  shutil.copyfile(srcfile, destfile)
  File "C:\Program Files\Python35\lib\shutil.py", line 121, in copyfile
  with open(dst, 'wb') as fdst:
  PermissionError: [Errno 13] Permission denied: 'C:\\Program Files\\Python35\\Lib\\site-packages\\six.py'
  </code></pre>