gh-139374: colorize timeit error traceback

Lib/test/test_timeit.py

@@ -223,7 +223,12 @@ def assert_exc_string(self, exc_string, expected_exc_name):
         exc_lines = exc_string.splitlines()
         self.assertGreater(len(exc_lines), 2)
         self.assertStartsWith(exc_lines[0], 'Traceback')
-        self.assertStartsWith(exc_lines[-1], expected_exc_name)
+        # Remove ANSI color codes from the last line before checking
+        import re
+        last_line = exc_lines[-1]
+        # Remove ANSI escape sequences
+        clean_last_line = re.sub(r'\x1b\[[0-9;]*m', '', last_line)
+        self.assertStartsWith(clean_last_line, expected_exc_name)
 
     def test_print_exc(self):
         s = io.StringIO()

Lib/timeit.py

@@ -150,15 +150,16 @@ def print_exc(self, file=None):
         The optional file argument directs where the traceback is
         sent; it defaults to sys.stderr.
         """
-        import linecache, traceback
+        import linecache, traceback, _colorize, sys
         if self.src is not None:
             linecache.cache[dummy_src_name] = (len(self.src),
                                                None,
                                                self.src.split("\n"),
                                                dummy_src_name)
         # else the source is already stored somewhere else
 
-        traceback.print_exc(file=file)
+        traceback.print_exception(sys.exception(), file=file,
+                                 colorize=_colorize.can_colorize(file=file))
 
     def timeit(self, number=default_number):
         """Time 'number' executions of the main statement.

Misc/NEWS.d/next/Library/2025-09-27-08-26-31.gh-issue-139374.hfh-dl.rst

@@ -0,0 +1 @@
+Make timeit error traceback can with corlor