code: def _parameterize_obj(obj):
      
  
      if isinstance(obj, Mapping):
          return dict((key, _parameterize_obj(value))
                      for key, value in obj.items())
      elif isinstance(obj, bytes):
          return _parameterize_string(obj.decode('utf8'))
      elif isinstance(obj, str):
          return _parameterize_string(obj)
      elif isinstance(obj, Sequence):
          return list(_parameterize_obj(item) for item in obj)
      else:
          return obj
docs: Recursively parameterize all strings contained in an object.
  
      Parameterizes all values of a Mapping, all items of a Sequence, an
      unicode string, or pass other objects through unmodified.
  
      Byte strings will be interpreted as UTF-8.
  
      Args:
          obj: data to parameterize
  
      Return:
          A parameterized object to be included in a CloudFormation template.
          Mappings are converted to `dict`, Sequences are converted to  `list`,
          and strings possibly replaced by compositions of function calls.