问响应中缺少数据json结果

EN

{
 "kind": "drive#fileList",
 "nextPageToken": "~!!~AI9......",
 "incompleteSearch": false,
 "files": [
  {
   "kind": "drive#file",
   "id": "1HL...",
   "name": "Slack Channel DLs",
   "mimeType": "application/vnd.google-apps.folder",
   "teamDriveId": "0AD...",
   "driveId": "0AD..."
  }]
}

 "kind": "drive#fileList",
 "nextPageToken": "~!!~AI9......",
 "incompleteSearch": false,
 "files": 

import json


from main_methods import GdriveConnection
# mainmethods is a script for my methods.

googleDrive = GdriveConnection()


files = googleDrive.listFiles()

print(json.dumps(files, indent=2))
count = 0

for file in files:
    count = count + 1

print('\n Total files: ' + str(count))

[
  {
   "kind": "drive#file",
   "id": "1HL...",
   "name": "Slack Channel DLs",
   "mimeType": "application/vnd.google-apps.folder",
   "teamDriveId": "0AD...",
   "driveId": "0AD..."
  }]

    def listFiles(self):
        service = build('drive', 'v3', credentials=self.creds)

        results = service.files().list(corpora='user', includeItemsFromAllDrives='true', orderBy='folder', pageSize='1000', supportsAllDrives='true', supportsTeamDrives='true').execute()

        files = results.get('files', [])

        return(files)