title: Google Api Client Library for python doesn't return nextPageToken in Files: list method with query
body: <p>I need to get the list of all files and folders in google drive owned by a user. For some reasons <a href="https://developers.google.com/drive/api/v3/reference/files/list" rel="nofollow noreferrer">file.list</a> method doesn't return <strong>nextPageToken</strong> in response and I see only few results, since I can't go to the next page.</p>
  
  <p>I have tried API Client Library for python and API explorer, but I receive only several records per user. </p>
  
  <p>My code</p>
  
  <pre class="lang-py prettyprint-override"><code>
  users = ['user1@domain.com', 'user2@domain.com']
  drive_array = []
  
  if users: 
      for item in users:
          page_token_drive = None
          query = "'%s' in owners" % (item)
          while True:
              drive_result = service_drive.files().list(q=query, corpora='domain', includeTeamDriveItems=False, 
                                                        supportsTeamDrives=False, fields='nextPageToken, files(id,owners)', 
                                                        pageToken=page_token_drive).execute()
              drive_array.extend(drive_result.get('files', []))
              page_token_drive = drive_result.get('nextPageToken', None)
              if not page_token_drive:
                  break
  
  </code></pre>
  
  <p>I expect to get id of a file and owners array for all files owned by the user </p>
  
  <pre><code>[
      {
          "id": "12344",
          "owners": [
              {
                  "kind": "drive#user",
                  "displayName": "User1 User1",
                  "photoLink": "https://lg",
                  "me": false,
                  "permissionId": "1234556",
                  "emailAddress": "user1@domain.com"
              }
          ]
      },
      {
          "id": "09875",
          "owners": [
              {
                  "kind": "drive#user",
                  "displayName": "User1 User1",
                  "photoLink": "https://lh5",
                  "me": false,
                  "permissionId": "56565665655656566",
                  "emailAddress": "user1@domain.com"
              }
          ]
      }
  ]
  </code></pre>