code: def generate_log_labels(columns, separator=","):
      labels = []
      # This is a header of sorts
      labels.append(rand_ascii_str(10))
  
      for n in range(1, len(columns[-1])):
          value = 0
          for i in range(len(columns)):
              try:
                  value += log(abs(columns[i][n]))
              except Exception:
                  pass
          labels.append(value)
      return labels
  
file_path: lightwood/tests/utils/data_generation.py
imports: import random
  import string
  import datetime
  from math import log
label_desc: Use image node_id 6 for calling a global function with example usage: generate_log_labels(columns, separator) and returns: labels