code: def test_attribute(self):
      creator.create(CNAME, list, a=1)
      result = creator.__dict__[CNAME]([1, 2, 3, 4])
      self.assertEqual(result.a, 1)
  
file_path: deap/tests/test_creator.py
imports: import unittest
  import array
  from deap import creator
label_desc: Use image node_id 3 for calling the TestCreator obj's underlying member method code with example usage: obj.test_attribute() without return types