code: def _generate_rand(filepath=None):
      # @todo filepath no longer has to be unique. Should we change this?
      if filepath is not None:
          _random.seed(filepath)
  
      return _random.random() * 0.001 + 0.999
  
imports: from collections import OrderedDict
  import random
  import fiftyone.core.fields
  import fiftyone.core.metadata
  import fiftyone.core.media
  import fiftyone.core.storage
  from .document import Document, SerializableDocument
  from .mixins import DatasetMixin, get_default_fields, NoDatasetMixin
label_desc: Use image node_id 1 for calling a global function with example usage: _generate_rand(filepath) and returns: unknown