code: def product(xs, empty=1):
      result = None
      for x in xs:
          if result is None:
              result = x
          else:
              result *= x
  
      if result is None:
          result = empty
  
      return result
  
imports: from datetime import datetime
  import importlib
  import logging
  import numpy
  import tensorflow
  from tensorforce import TensorforceError
label_desc: Use image node_id 7 for calling a global function with example usage: product(xs, empty) and returns: result