code: def query_clients(self):
          
  
          try:
              data = self.call("clients", {'client': 'None'})
              if len(data) > 0:
                  return pd.DataFrame(data).drop(
                      ['commandLine',
                       'processId'],
                      axis=1
                  )
              else:
                  return pd.DataFrame(
                      None,
                      columns=[
                          'id',
                          'name',
                          'windowsTitle',
                          'accountInfo',
                          'status'
                      ]
                  )
          except Exception as e:
              return False, e
docs: 查询clients
  
          Returns:
              [type] -- [description]