code: def is_float(value: str) -> bool:
      try:
          float(value)
          return True
      except ValueError:
          return False
  
file_path: vowpal_wabbit/python/tests/test_cb.py
imports: import pandas
  from os import path
  import vowpalwabbit
  import unittest
  import platform
  import math
  import re
label_desc: Use image node_id 6 for calling a global function with example usage: is_float(value) and returns: True, False