title: Chmod issue to change file permission using python
body: <p>I am looking to change the file permission to all files to read write and execute for all the users in a directory using a python script. However, after running the script when I check the file permission doing the right click, it only shows the permissions for me and for the group everyone it only has read permission. Is there anything wrong I am doing in the following script: </p>
  
  <pre><code>import os
  import pdb
  
  for dirpath, dirnames, filenames in os.walk('M:\intra\EU'):
      for filename in filenames:
          path = os.path.join(dirpath, filename)
          os.chmod(path, 0o777) # for example
  </code></pre>