code: def __init__(self, length=0):
      self._columns = []
      # records is list of lists with the same length as columns
      self._records = []
      for i in range(length):
          self._records.append([])
  
      self.is_prediction = False
  
imports: import copy
  import pandas
  from mindsdb.api.executor.exceptions import WrongArgumentError
label_desc: Use image node_id 1 to create a new ResultSet object  with example: obj = ResultSet(length)