title: Python script not deleting Git files in Windows
body: <p>I'm using the following code to delete a directory containing a git repo:</p>
  
  <pre><code>import errno
  import os
  import stat
  import shutil
  
  
  def clear_dir(path):
      shutil.rmtree(path, ignore_errors=False, onerror=handle_remove_readonly)
  
  
  def handle_remove_readonly(func, path, exc):
    excvalue = exc[1]
    if func in (os.rmdir, os.remove) and excvalue.errno == errno.EACCES:
        os.chmod(path, stat.S_IRWXU| stat.S_IRWXG| stat.S_IRWXO) # 0777
        func(path)
    else:
        raise
  </code></pre>
  
  <p>This code should deal well with read-only files. I can delete the directory/folder from Windows Explorer, but when I run the following code:</p>
  
  <pre><code>if __name__ == '__main__':
      clear_dir(r'c:\path\to\ci-monitor')
  </code></pre>
  
  <p>I get the following error:</p>
  
  <pre><code>  File "C:\Users\m45914\code\ci-monitor\utils\filehandling.py", line 8, in clear_dir                              
      shutil.rmtree(path, ignore_errors=False, onerror=handle_remove_readonly)                                      
    File "C:\Users\m45914\AppData\Local\Programs\Python\Python35\lib\shutil.py", line 488, in rmtree                
      return _rmtree_unsafe(path, onerror)                                                                          
    File "C:\Users\m45914\AppData\Local\Programs\Python\Python35\lib\shutil.py", line 378, in _rmtree_unsafe        
      _rmtree_unsafe(fullname, onerror)                                                                             
    File "C:\Users\m45914\AppData\Local\Programs\Python\Python35\lib\shutil.py", line 378, in _rmtree_unsafe        
      _rmtree_unsafe(fullname, onerror)                                                                             
    File "C:\Users\m45914\AppData\Local\Programs\Python\Python35\lib\shutil.py", line 378, in _rmtree_unsafe        
      _rmtree_unsafe(fullname, onerror)                                                                             
    File "C:\Users\m45914\AppData\Local\Programs\Python\Python35\lib\shutil.py", line 378, in _rmtree_unsafe        
      _rmtree_unsafe(fullname, onerror)                                                                             
    File "C:\Users\m45914\AppData\Local\Programs\Python\Python35\lib\shutil.py", line 383, in _rmtree_unsafe        
      onerror(os.unlink, fullname, sys.exc_info())                                                                  
    File "C:\Users\m45914\AppData\Local\Programs\Python\Python35\lib\shutil.py", line 381, in _rmtree_unsafe        
      os.unlink(fullname)                                                                                           
  PermissionError: [WinError 5] Access is denied: 'scratch\\repos\\ci-monitor\\.git\\objects\\pack\\pack-83e55c6964d
  21e8be0afb2cbccd887eae3e32bf4.idx'                                                                                
  </code></pre>
  
  <p>I've tried running the script as administrator (no change.)</p>
  
  <p>The directory being deleted is a git repo, and I am periodically cloning, checking and deleting it. The checks are to make sure there are no unmerged release and hotfix branches in the repo.</p>
  
  <p>Anyone got any ideas?</p>