code: def test_multiple_creation_ignored(self):
      _TMP2 = ContextVar("_TMP2", 1)
      _TMP2 = ContextVar("_TMP2", 2)
      self.assertEqual(_TMP2.value, 1)
  
imports: import unittest
  from PIL import Image
  from tinygrad.helpers import Context, ContextVar, merge_dicts, strip_parens, prod, round_up, fetch, fully_flatten, from_mv, to_mv
  from tinygrad.shape.symbolic import Variable, NumNode
label_desc: Use image node_id 4 for calling the TestContextVars obj's underlying member method code with example usage: obj.test_multiple_creation_ignored() without return types