code: def test_basic(self):
      def f(l):
          s1 = 0
          s2 = 0
          for e in l:
              s1 += e
              s2 += e * e
          return s1, s2
  
      self.assertTransformedResult(f, custom_constant([1, 3]), (4, 10))
      empty_vector = custom_constant([], shape=(0,), dtype=int)
      self.assertTransformedResult(f, empty_vector, (0, 0))
  
imports: import collections
  from nvidia.dali._autograph.converters import break_statements
  from nvidia.dali._autograph.converters import continue_statements
  from nvidia.dali._autograph.converters import control_flow
  from nvidia.dali._autograph.core import converter_testing
  from nvidia.dali._autograph.utils.all_utils import custom_constant
label_desc: Use image node_id 1 for calling the ForStatementTest obj's underlying member method code with example usage: obj.test_basic() and returns: s1,  s2