code: def test_list_comparison(self):
      self.run_test(
          "def list_comparison(l): return max(l)",
          [[1, 2, 3], [1, 4, 1], [1, 4, 8, 9]],
          list_comparison=[List[List[int]]],
      )
  
imports: from pythran.tests import TestEnv
  from pythran.typing import List, NDArray
  import numpy
label_desc: Use image node_id 21 for calling the TestList obj's underlying member method code with example usage: obj.test_list_comparison() without return types