code: def test_equality(self):
      # values doesn't matter, only class and name are checked
      v1 = Variable(self.root, name="abc")
      v2 = Variable(self.root, name="abc")
      self.assertIsNot(v1, v2)
      self.assertEqual(v1, v2)
  
      v3 = Variable(self.root, name="cba")
      self.assertNotEqual(v1, v3)
  
      v4 = StringVar(self.root, name="abc")
      self.assertEqual(str(v1), str(v4))
      self.assertNotEqual(v1, v4)
  
      V = type("Variable", (), {})
      self.assertNotEqual(v1, V())
  
      self.assertNotEqual(v1, object())
      self.assertEqual(v1, ALWAYS_EQ)
  
      root2 = tkinter.Tk()
      self.addCleanup(root2.destroy)
      v5 = Variable(root2, name="abc")
      self.assertEqual(str(v1), str(v5))
      self.assertNotEqual(v1, v5)
  
imports: import unittest
  from test import support
  import gc
  import tkinter
  from tkinter import Variable, StringVar, IntVar, DoubleVar, BooleanVar, Tcl, TclError
  from test.support import ALWAYS_EQ
  from test.test_tkinter.support import AbstractDefaultRootTest
label_desc: Use image node_id 6 for calling the TestVariable obj's underlying member method code with example usage: obj.test_equality() without return types