code: def epsilon():
      """Return the value of the fuzz factor used in numeric expressions.
  
      Returns:
          A float.
  
      Example:
  
      >>> keras.config.epsilon()
      1e-07
  
      """
      return _EPSILON
  
file_path: keras/keras/backend/config.py
imports: import json
  import os
  from keras.api_export import keras_export
label_desc: Use image node_id 3 for calling a global function with example usage: epsilon() and returns: _EPSILON