reduce test duration

Author: eendebakpt

Lib/test/test_free_threading/test_itertools.py

@@ -20,7 +20,7 @@ class ItertoolsThreading(unittest.TestCase):
     def test_accumulate(self):
         number_of_iterations = 10
         for _ in range(number_of_iterations):
-            it = accumulate(tuple(range(500)))
+            it = accumulate(tuple(range(40)))
             threading_helper.run_concurrently(work_iterator, nthreads=10, args=[it])
 
     @threading_helper.reap_threads