timeit: add newlines to output for readability

Issue #28240.

Lib/test/test_timeit.py

@@ -297,7 +297,9 @@ class TestTimeit(unittest.TestCase):
         s = self.run_main(switches=['-v'])
         self.assertEqual(s, dedent("""\
                 1 loop -> 1 secs
+
                 raw times: 1 sec, 1 sec, 1 sec, 1 sec, 1 sec
+
                 1 loop, best of 5: 1 sec per loop
             """))
 
@@ -309,7 +311,9 @@ class TestTimeit(unittest.TestCase):
                 100 loops -> 0.005 secs
                 1000 loops -> 0.05 secs
                 10000 loops -> 0.5 secs
+
                 raw times: 500 msec, 500 msec, 500 msec, 500 msec, 500 msec
+
                 10000 loops, best of 5: 50 usec per loop
             """))
 

Lib/timeit.py

@@ -325,6 +325,9 @@ def main(args=None, *, _wrap_timer=None):
             t.print_exc()
             return 1
 
+        if verbose:
+            print()
+
     try:
         raw_timings = t.repeat(repeat, number)
     except:
@@ -347,7 +350,7 @@ def main(args=None, *, _wrap_timer=None):
 
     if verbose:
         print("raw times: %s" % ", ".join(map(format_time, raw_timings)))
-
+        print()
     timings = [dt / number for dt in raw_timings]
 
     best = min(timings)