code: def load(self, data):
      self.step = data["step"].copy()
      self.last_step = data["last_step"].copy()
      self.value = data["value"].copy()
  
      if "smoothed" in data:
          self.smoothed = data["smoothed"].copy()
      else:
          self.smoothed = []
  
      return self
  
imports: import math
  from typing import Dict, List, Optional, Union
  from datetime import datetime, timedelta
  import numpy
label_desc: Use image node_id 17 for calling the Series obj's underlying member method code with example usage: obj.load(data) and returns: self