Use assertRegex for check debug stats

Author: pgdr

Lib/test/test_gc.py

@@ -812,11 +812,10 @@ def test_gc_debug_stats(self):
             gc.collect()
             """
         _, _, err = assert_python_ok("-c", code % "gc.DEBUG_STATS")
-        self.assertIn(b"gc: collecting generation", err)
-        self.assertIn(b"gc: objects in each generation:", err)
-        self.assertIn(b"gc: objects in permanent generation:", err)
-        self.assertIn(b"gc: done", err)
-        self.assertIn(b"elapsed", err)
+        self.assertRegex(err, b"gc: collecting generation [0-9]+")
+        self.assertRegex(err, b"gc: objects in each generation: [0-9]+ [0-9]+ [0-9]+")
+        self.assertRegex(err, b"gc: objects in permanent generation: [0-9]+")
+        self.assertRegex(err, b"gc: done, [0-9]+ unreachable, [0-9]+ uncollectable, [0-9]+.[0-9]+s elapsed")
 
         _, _, err = assert_python_ok("-c", code % "0")
         self.assertNotIn(b"elapsed", err)