code: def get_predict_action(self, pred_line):
      separator_position = pred_line.find(",")
      return float(pred_line[:separator_position])
  
file_path: vowpal_wabbit/demo/cats/utility/srm.py
imports: import sys
  import getopt
  import math
label_desc: Use image node_id 4 for calling the SRM obj's underlying member method code with example usage: obj.get_predict_action(pred_line) and returns: float