class_docstr: TFRecordWriter close and flush tests
class_docstr_tok: ["TFRecordWriter","close","and","flush","tests"]
code: def testFlushAfterCloseIsError(self):
      self._writer.write(self._Record(0))
      self._writer.close()
  
      with self.assertRaises(errors_impl.FailedPreconditionError):
          self._writer.flush()
  
imports: import gzip
  import os
  import random
  import string
  import zlib
  import six
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.lib.io import tf_record
  from tensorflow.python.platform import test
  from tensorflow.python.util import compat
label_desc: Use image node_id 7 for calling the TFRecordWriterCloseAndFlushTests obj's underlying member method code with example usage: obj.testFlushAfterCloseIsError() without return types