code: def test_grouped_size_1_groups_5_elements():
      actual = list(grouped(1, ["abc", "def", "ghi", "jkl", "mno"]))
      expected = [["abc"], ["def"], ["ghi"], ["jkl"], ["mno"]]
      assert actual == expected
  
imports: from hailtop.utils import partition, url_basename, url_join, url_scheme, url_and_params, parse_docker_image_reference, grouped
  from hailtop.utils.utils import digits_needed, unzip, filter_none, flatten
label_desc: Use image node_id 17 for calling a global function with example usage: test_grouped_size_1_groups_5_elements() without return types