[3.13] gh-148254: Use singular "sec" in timeit verbose output (GH-148290) (#148304)

Co-authored-by: gaweng <38250674+gaweng@users.noreply.github.com>

Author: hugovk

Lib/test/test_timeit.py

@@ -304,7 +304,7 @@ def test_main_help(self):
     def test_main_verbose(self):
         s = self.run_main(switches=['-v'])
         self.assertEqual(s, dedent("""\
-                1 loop -> 1 secs
+                1 loop -> 1 sec
 
                 raw times: 1 sec, 1 sec, 1 sec, 1 sec, 1 sec
 
@@ -314,19 +314,19 @@ def test_main_verbose(self):
     def test_main_very_verbose(self):
         s = self.run_main(seconds_per_increment=0.000_030, switches=['-vv'])
         self.assertEqual(s, dedent("""\
-                1 loop -> 3e-05 secs
-                2 loops -> 6e-05 secs
-                5 loops -> 0.00015 secs
-                10 loops -> 0.0003 secs
-                20 loops -> 0.0006 secs
-                50 loops -> 0.0015 secs
-                100 loops -> 0.003 secs
-                200 loops -> 0.006 secs
-                500 loops -> 0.015 secs
-                1000 loops -> 0.03 secs
-                2000 loops -> 0.06 secs
-                5000 loops -> 0.15 secs
-                10000 loops -> 0.3 secs
+                1 loop -> 3e-05 sec
+                2 loops -> 6e-05 sec
+                5 loops -> 0.00015 sec
+                10 loops -> 0.0003 sec
+                20 loops -> 0.0006 sec
+                50 loops -> 0.0015 sec
+                100 loops -> 0.003 sec
+                200 loops -> 0.006 sec
+                500 loops -> 0.015 sec
+                1000 loops -> 0.03 sec
+                2000 loops -> 0.06 sec
+                5000 loops -> 0.15 sec
+                10000 loops -> 0.3 sec
 
                 raw times: 300 msec, 300 msec, 300 msec, 300 msec, 300 msec
 

Lib/timeit.py

@@ -322,7 +322,7 @@ def main(args=None, *, _wrap_timer=None):
         callback = None
         if verbose:
             def callback(number, time_taken):
-                msg = "{num} loop{s} -> {secs:.{prec}g} secs"
+                msg = "{num} loop{s} -> {secs:.{prec}g} sec"
                 plural = (number != 1)
                 print(msg.format(num=number, s='s' if plural else '',
                                  secs=time_taken, prec=precision))

Misc/NEWS.d/next/Library/2026-04-09-12-42-42.gh-issue-148254.Xt7vKs.rst

@@ -0,0 +1,2 @@
+Use singular "sec" instead of "secs" in :mod:`timeit` verbose output for
+consistency with other time units.