Pagination in python

def main(req, res):

  try:
    client = Client()

    if not req.variables.get('APPWRITE_FUNCTION_ENDPOINT') or not req.variables.get('APPWRITE_FUNCTION_API_KEY'):
      print('Environment variables are not set. Function cannot use Appwrite SDK.')
    else:
      (
      client
   .set_endpoint(req.variables.get('APPWRITE_FUNCTION_ENDPOINT', None))
        .set_project(req.variables.get('APPWRITE_FUNCTION_PROJECT_ID', None))
        .set_key(req.variables.get('APPWRITE_FUNCTION_API_KEY', None))
        .set_self_signed(True)
      )

      databases = Databases(client)

    def fetch_documents(cursor):
      all_docs = []
      query_options = [
          Query.orderDesc("age"),
          Query.limit(25),
      ]

      while True:
          response = databases.list_documents(
              '647ac763cf53ed9xxxxx',
              '647ac820ba38520xxxxx',
              query_options
          )
          try:
              if cursor:
                 last_id = response['documents'][-1]['$id']
                 query_options.append(Query.cursorAfter(last_id))
                 cursor = False

              documents = response['documents']
              all_docs.extend(documents)

              if len(documents) < 25:
                  break

              last_id = documents[-1]['$id']
              query_options[-1] = Query.cursorAfter(last_id)
          except Exception as e:
              all_docs = ["error"]
              print(e)
              break

      return all_docs
    
    return res.json({
      "result": fetch_documents(True),
    })
  
  except Exception as e:
      return res.json({
        "error": str(e)
      })```

          Query.orderDesc("age"),
          Query.limit(25),
      ]


      response = databases.list_documents(
              '647ac763cf53edxxxxx',
              '647ac820ba38520xxxx',
              query_options
          )```