code: def test_inside_context_assignment(self):
      with Context(VARIABLE=4):
          # What you can and cannot do inside a context.
          # 1. This type of statement has no effect.
          VARIABLE = ContextVar("VARIABLE", 0)
          self.assertTrue(
              VARIABLE >= 4,
              "ContextVars inside contextmanager may not set a new value",
          )
  
          # 2. The call syntax however has a local effect.
          VARIABLE.value = 13
          self.assertTrue(
              VARIABLE.value == 13,
              "Call syntax however works inside a contextmanager.",
          )
  
      # Related to 2. above. Note that VARIABLE is back to 0 again as expected.
      self.assertEqual(VARIABLE.value, 0)
  
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 10 for calling the TestContextVars obj's underlying member method code with example usage: obj.test_inside_context_assignment() without return types