code: def read_recordio(f):
      """Placeholder Docstring"""
      while True:
          try:
              (read_kmagic,) = struct.unpack("I", f.read(4))
          except struct.error:
              return
          assert read_kmagic == _kmagic
          (len_record,) = struct.unpack("I", f.read(4))
          pad = (((len_record + 3) >> 2) << 2) - len_record
          yield f.read(len_record)
          if pad:
              f.read(pad)
  
imports: from __future__ import absolute_import
  import io
  import logging
  import struct
  import sys
  import numpy
  from sagemaker.amazon.record_pb2 import Record
  from sagemaker.deprecations import deprecated_class
  from sagemaker.deserializers import SimpleBaseDeserializer
  from sagemaker.serializers import SimpleBaseSerializer
  from sagemaker.utils import DeferredError
label_desc: Use image node_id 9 for calling a global function with example usage: read_recordio(f) without return types