From a2f1a4e37b2df2d69864eac9087f91fcdbf838ce Mon Sep 17 00:00:00 2001
From: gaweng <tan@gaweng.de>
Date: Thu, 9 Apr 2026 12:43:03 +0200
Subject: [PATCH] gh-148254: Use singular "sec" in timeit verbose output

Change "secs" to "sec" in the verbose callback of timeit.main() for
consistency with other time units (nsec, usec, msec, sec) used elsewhere
in the module output.
---
 Lib/test/test_timeit.py                       | 30 +++++++++----------
 Lib/timeit.py                                 |  2 +-
 ...-04-09-12-42-42.gh-issue-148254.Xt7vKs.rst |  2 ++
 3 files changed, 18 insertions(+), 16 deletions(-)
 create mode 100644 Misc/NEWS.d/next/Library/2026-04-09-12-42-42.gh-issue-148254.Xt7vKs.rst

diff --git a/Lib/test/test_timeit.py b/Lib/test/test_timeit.py
index 4971ebe0b78ef8..f41a8a41834b3b 100644
--- a/Lib/test/test_timeit.py
+++ b/Lib/test/test_timeit.py
@@ -309,7 +309,7 @@ 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
 
@@ -319,19 +319,19 @@ 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
 
@@ -429,7 +429,7 @@ def test_main_verbose_colorized(self):
         s = self.run_main(switches=["-v"])
         self.assertEqual(
             s,
-            f"1 loop {t.punctuation}-> {t.timing}1 secs{t.reset}\n\n"
+            f"1 loop {t.punctuation}-> {t.timing}1 sec{t.reset}\n\n"
             "raw times: "
             f"{t.timing}1 sec{t.punctuation}, "
             f"{t.timing}1 sec{t.punctuation}, "
diff --git a/Lib/timeit.py b/Lib/timeit.py
index 130777768f79fc..f09ef43400ebd8 100644
--- a/Lib/timeit.py
+++ b/Lib/timeit.py
@@ -343,7 +343,7 @@ def callback(number, time_taken):
                 print(
                     f"{number} loop{s} "
                     f"{theme.punctuation}-> "
-                    f"{theme.timing}{time_taken:.{precision}g} secs{reset}"
+                    f"{theme.timing}{time_taken:.{precision}g} sec{reset}"
                 )
 
         try:
diff --git a/Misc/NEWS.d/next/Library/2026-04-09-12-42-42.gh-issue-148254.Xt7vKs.rst b/Misc/NEWS.d/next/Library/2026-04-09-12-42-42.gh-issue-148254.Xt7vKs.rst
new file mode 100644
index 00000000000000..818310c31b9de6
--- /dev/null
+++ b/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.