code: def testWritelinesNonString(self):
      # verify writelines with non-string object
      class NonString:
          pass
  
      self.assertRaises(
          TypeError, self.f.writelines, [NonString(), NonString()]
      )
  
imports: import sys
  import os
  import unittest
  from array import array
  from weakref import proxy
  import io
  import _pyio
  from test.support import gc_collect
  from test.support.os_helper import TESTFN
  from test.support import os_helper
  from test.support import warnings_helper
  from collections import UserList
label_desc: Use image node_id 10 for calling the AutoFileTests obj's underlying member method code with example usage: obj.testWritelinesNonString() without return types