code: def convert_neural_network_spec_weights_to_fp16(fp_spec):
      return _convert_neural_network_spec_weights_to_fp16(fp_spec)
  
imports: import math
  import numpy
  import os
  import six
  import warnings
  import sys
  from coremltools.proto import Model_pb2
  from coremltools.models._deprecation import deprecated
  from .._deps import _HAS_SKLEARN
label_desc: Use image node_id 8 for calling a global function with example usage: convert_neural_network_spec_weights_to_fp16(fp_spec) and returns: _convert_neural_network_spec_weights_to_fp16