title: PermissionError: [Errno 13] Permission denied and Subprocess error
body: <pre><code>    PermissionError                           Traceback (most recent call last)
  &lt;ipython-input-8-bab992cc7bb5&gt; in &lt;module&gt;()
       67 
       68 if __name__ == &quot;__main__&quot;:
  ---&gt; 69     main()
  
  /content/gdrive/My Drive/LORE/pyyadt.py in fit(df, class_name, columns, features_type, discrete, continuous, filename, path, sep, log)
       32     cmd = 'yadt/dTcmd -fd %s -fm %s -sep %s -d %s' % (
       33         data_filename, names_filename, sep, tree_filename)
  ---&gt; 34     output = subprocess.check_output(cmd.split(), stderr=subprocess.STDOUT)
       35     # cmd = r&quot;dTcmd -fd %s -fm %s -sep '%s' -d %s&quot; % (
       36     #     data_filename, names_filename, sep, tree_filename)
  
  /usr/lib/python3.6/subprocess.py in check_output(timeout, *popenargs, **kwargs)
      354 
      355     return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  --&gt; 356                **kwargs).stdout
      357 
      358 
  
  /usr/lib/python3.6/subprocess.py in run(input, timeout, check, *popenargs, **kwargs)
      421         kwargs['stdin'] = PIPE
      422 
  --&gt; 423     with Popen(*popenargs, **kwargs) as process:
      424         try:
      425             stdout, stderr = process.communicate(input, timeout=timeout)
  
  /usr/lib/python3.6/subprocess.py in __init__(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags, restore_signals, start_new_session, pass_fds, encoding, errors)
      727                                 c2pread, c2pwrite,
      728                                 errread, errwrite,
  --&gt; 729                                 restore_signals, start_new_session)
      730         except:
      731             # Cleanup if the child failed starting.
  
  /usr/lib/python3.6/subprocess.py in _execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, restore_signals, start_new_session)
     1362                         if errno_num == errno.ENOENT:
     1363                             err_msg += ': ' + repr(err_filename)
  -&gt; 1364                     raise child_exception_type(errno_num, err_msg, err_filename)
     1365                 raise child_exception_type(err_msg)
     1366 
  
  PermissionError: [Errno 13] Permission denied: 'yadt/dTcmd'
  </code></pre>
  <p>I am unable to access the file and hence script not running. Tried different python versions as well in virtual envs. Any help on this subprocess error?</p>
  <p>The file 'dTcmd' have no extension.</p>