code: def bytes_to_floats(byte_matrix):
      floats = np.empty([np.shape(byte_matrix)[0], 1], dtype=np.float32)
      for i, byte_values in enumerate(byte_matrix):
          (floats[i],) = struct.unpack("f", bytearray(byte_values))
      return floats
  
imports: import struct
  import unittest
  import caffe2.python.hypothesis_test_util
  import hypothesis.strategies
  import numpy
  import torch
  from caffe2.python import core, workspace
  from hypothesis import given, settings
  from scipy.stats import norm
  from ._utils import assert_allclose
label_desc: Use image node_id 4 for calling a global function with example usage: bytes_to_floats(byte_matrix) and returns: floats