code: def test_basic_f_score_evaluated_smaller():
      result = f_score(("s1",), ("s1", "s2", "s3", "s4", "s5"))
  
      assert result == approx(1 / 3)
  
imports: from __future__ import absolute_import
  from __future__ import division, print_function, unicode_literals
  import pytest
  from pytest import approx
  from sumy.evaluation import precision, recall, f_score
label_desc: Use image node_id 17 for calling a global function with example usage: test_basic_f_score_evaluated_smaller() without return types