code: def test_array(self):
      creator.create(CNAME, array.array, typecode="i")
      a = creator.__dict__[CNAME]([1, 2, 3, 4])
      b = creator.__dict__[CNAME]([5, 6, 7, 8])
  
      a[1:3], b[1:3] = b[1:3], a[1:3]
      ta = array.array("i", [1, 6, 7, 4])
      tb = array.array("i", [5, 2, 3, 8])
      self.assertSequenceEqual(a, ta)
      self.assertSequenceEqual(b, tb)
  
file_path: deap/tests/test_creator.py
imports: import unittest
  import array
  from deap import creator
label_desc: Use image node_id 4 for calling the TestCreator obj's underlying member method code with example usage: obj.test_array() without return types