code: def dtype_policy():
      """Returns the current default dtype policy object."""
      policy = global_state.get_global_attribute("dtype_policy", None)
      if policy is None:
          policy = DTypePolicy(backend.floatx())
          set_dtype_policy(policy)
      return policy
  
file_path: keras/keras/mixed_precision/dtype_policy.py
imports: from keras import backend
  from keras.api_export import keras_export
  from keras.backend.common import global_state
label_desc: Use image node_id 2 for calling a global function with example usage: dtype_policy() and returns: policy