Issue #25280: Import trace messages emitted in verbose (-v) mode are no
longer formatted twice.
diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
index 3508ce9..616b17f 100644
--- a/Lib/importlib/_bootstrap_external.py
+++ b/Lib/importlib/_bootstrap_external.py
@@ -437,15 +437,15 @@
     raw_size = data[8:12]
     if magic != MAGIC_NUMBER:
         message = 'bad magic number in {!r}: {!r}'.format(name, magic)
-        _verbose_message(message)
+        _verbose_message('{}', message)
         raise ImportError(message, **exc_details)
     elif len(raw_timestamp) != 4:
         message = 'reached EOF while reading timestamp in {!r}'.format(name)
-        _verbose_message(message)
+        _verbose_message('{}', message)
         raise EOFError(message)
     elif len(raw_size) != 4:
         message = 'reached EOF while reading size of source in {!r}'.format(name)
-        _verbose_message(message)
+        _verbose_message('{}', message)
         raise EOFError(message)
     if source_stats is not None:
         try:
@@ -455,7 +455,7 @@
         else:
             if _r_long(raw_timestamp) != source_mtime:
                 message = 'bytecode is stale for {!r}'.format(name)
-                _verbose_message(message)
+                _verbose_message('{}', message)
                 raise ImportError(message, **exc_details)
         try:
             source_size = source_stats['size'] & 0xFFFFFFFF
diff --git a/Misc/NEWS b/Misc/NEWS
index bde0865..354e9ec 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -11,6 +11,9 @@
 Core and Builtins
 -----------------
 
+- Issue #25280: Import trace messages emitted in verbose (-v) mode are no
+  longer formatted twice.
+
 - Issue #25003: On Solaris 11.3 or newer, os.urandom() now uses the
   getrandom() function instead of the getentropy() function. The getentropy()
   function is blocking to generate very good quality entropy, os.urandom()
diff --git a/Python/importlib_external.h b/Python/importlib_external.h
index 48d6be5..b20ce17 100644
--- a/Python/importlib_external.h
+++ b/Python/importlib_external.h
@@ -635,7 +635,7 @@
     95,102,105,110,100,95,109,111,100,117,108,101,95,115,104,105,
     109,143,1,0,0,115,10,0,0,0,0,10,21,1,24,1,
     6,1,29,1,114,130,0,0,0,99,4,0,0,0,0,0,
-    0,0,11,0,0,0,19,0,0,0,67,0,0,0,115,228,
+    0,0,11,0,0,0,19,0,0,0,67,0,0,0,115,240,
     1,0,0,105,0,0,125,4,0,124,2,0,100,1,0,107,
     9,0,114,31,0,124,2,0,124,4,0,100,2,0,60,110,
     6,0,100,3,0,125,2,0,124,3,0,100,1,0,107,9,
@@ -643,58 +643,59 @@
     0,100,1,0,100,5,0,133,2,0,25,125,5,0,124,0,
     0,100,5,0,100,6,0,133,2,0,25,125,6,0,124,0,
     0,100,6,0,100,7,0,133,2,0,25,125,7,0,124,5,
-    0,116,0,0,107,3,0,114,165,0,100,8,0,106,1,0,
-    124,2,0,124,5,0,131,2,0,125,8,0,116,2,0,124,
-    8,0,131,1,0,1,116,3,0,124,8,0,124,4,0,141,
-    1,0,130,1,0,110,113,0,116,4,0,124,6,0,131,1,
-    0,100,5,0,107,3,0,114,223,0,100,9,0,106,1,0,
-    124,2,0,131,1,0,125,8,0,116,2,0,124,8,0,131,
-    1,0,1,116,5,0,124,8,0,131,1,0,130,1,0,110,
-    55,0,116,4,0,124,7,0,131,1,0,100,5,0,107,3,
-    0,114,22,1,100,10,0,106,1,0,124,2,0,131,1,0,
-    125,8,0,116,2,0,124,8,0,131,1,0,1,116,5,0,
-    124,8,0,131,1,0,130,1,0,124,1,0,100,1,0,107,
-    9,0,114,214,1,121,20,0,116,6,0,124,1,0,100,11,
-    0,25,131,1,0,125,9,0,87,110,18,0,4,116,7,0,
-    107,10,0,114,74,1,1,1,1,89,110,59,0,88,116,8,
-    0,124,6,0,131,1,0,124,9,0,107,3,0,114,133,1,
-    100,12,0,106,1,0,124,2,0,131,1,0,125,8,0,116,
-    2,0,124,8,0,131,1,0,1,116,3,0,124,8,0,124,
-    4,0,141,1,0,130,1,0,121,18,0,124,1,0,100,13,
-    0,25,100,14,0,64,125,10,0,87,110,18,0,4,116,7,
-    0,107,10,0,114,171,1,1,1,1,89,110,43,0,88,116,
-    8,0,124,7,0,131,1,0,124,10,0,107,3,0,114,214,
-    1,116,3,0,100,12,0,106,1,0,124,2,0,131,1,0,
-    124,4,0,141,1,0,130,1,0,124,0,0,100,7,0,100,
-    1,0,133,2,0,25,83,41,15,97,122,1,0,0,86,97,
-    108,105,100,97,116,101,32,116,104,101,32,104,101,97,100,101,
-    114,32,111,102,32,116,104,101,32,112,97,115,115,101,100,45,
-    105,110,32,98,121,116,101,99,111,100,101,32,97,103,97,105,
-    110,115,116,32,115,111,117,114,99,101,95,115,116,97,116,115,
-    32,40,105,102,10,32,32,32,32,103,105,118,101,110,41,32,
-    97,110,100,32,114,101,116,117,114,110,105,110,103,32,116,104,
-    101,32,98,121,116,101,99,111,100,101,32,116,104,97,116,32,
-    99,97,110,32,98,101,32,99,111,109,112,105,108,101,100,32,
-    98,121,32,99,111,109,112,105,108,101,40,41,46,10,10,32,
-    32,32,32,65,108,108,32,111,116,104,101,114,32,97,114,103,
-    117,109,101,110,116,115,32,97,114,101,32,117,115,101,100,32,
-    116,111,32,101,110,104,97,110,99,101,32,101,114,114,111,114,
-    32,114,101,112,111,114,116,105,110,103,46,10,10,32,32,32,
-    32,73,109,112,111,114,116,69,114,114,111,114,32,105,115,32,
-    114,97,105,115,101,100,32,119,104,101,110,32,116,104,101,32,
-    109,97,103,105,99,32,110,117,109,98,101,114,32,105,115,32,
-    105,110,99,111,114,114,101,99,116,32,111,114,32,116,104,101,
-    32,98,121,116,101,99,111,100,101,32,105,115,10,32,32,32,
-    32,102,111,117,110,100,32,116,111,32,98,101,32,115,116,97,
-    108,101,46,32,69,79,70,69,114,114,111,114,32,105,115,32,
-    114,97,105,115,101,100,32,119,104,101,110,32,116,104,101,32,
-    100,97,116,97,32,105,115,32,102,111,117,110,100,32,116,111,
-    32,98,101,10,32,32,32,32,116,114,117,110,99,97,116,101,
-    100,46,10,10,32,32,32,32,78,114,106,0,0,0,122,10,
-    60,98,121,116,101,99,111,100,101,62,114,35,0,0,0,114,
-    12,0,0,0,233,8,0,0,0,233,12,0,0,0,122,30,
-    98,97,100,32,109,97,103,105,99,32,110,117,109,98,101,114,
-    32,105,110,32,123,33,114,125,58,32,123,33,114,125,122,43,
+    0,116,0,0,107,3,0,114,168,0,100,8,0,106,1,0,
+    124,2,0,124,5,0,131,2,0,125,8,0,116,2,0,100,
+    9,0,124,8,0,131,2,0,1,116,3,0,124,8,0,124,
+    4,0,141,1,0,130,1,0,110,119,0,116,4,0,124,6,
+    0,131,1,0,100,5,0,107,3,0,114,229,0,100,10,0,
+    106,1,0,124,2,0,131,1,0,125,8,0,116,2,0,100,
+    9,0,124,8,0,131,2,0,1,116,5,0,124,8,0,131,
+    1,0,130,1,0,110,58,0,116,4,0,124,7,0,131,1,
+    0,100,5,0,107,3,0,114,31,1,100,11,0,106,1,0,
+    124,2,0,131,1,0,125,8,0,116,2,0,100,9,0,124,
+    8,0,131,2,0,1,116,5,0,124,8,0,131,1,0,130,
+    1,0,124,1,0,100,1,0,107,9,0,114,226,1,121,20,
+    0,116,6,0,124,1,0,100,12,0,25,131,1,0,125,9,
+    0,87,110,18,0,4,116,7,0,107,10,0,114,83,1,1,
+    1,1,89,110,62,0,88,116,8,0,124,6,0,131,1,0,
+    124,9,0,107,3,0,114,145,1,100,13,0,106,1,0,124,
+    2,0,131,1,0,125,8,0,116,2,0,100,9,0,124,8,
+    0,131,2,0,1,116,3,0,124,8,0,124,4,0,141,1,
+    0,130,1,0,121,18,0,124,1,0,100,14,0,25,100,15,
+    0,64,125,10,0,87,110,18,0,4,116,7,0,107,10,0,
+    114,183,1,1,1,1,89,110,43,0,88,116,8,0,124,7,
+    0,131,1,0,124,10,0,107,3,0,114,226,1,116,3,0,
+    100,13,0,106,1,0,124,2,0,131,1,0,124,4,0,141,
+    1,0,130,1,0,124,0,0,100,7,0,100,1,0,133,2,
+    0,25,83,41,16,97,122,1,0,0,86,97,108,105,100,97,
+    116,101,32,116,104,101,32,104,101,97,100,101,114,32,111,102,
+    32,116,104,101,32,112,97,115,115,101,100,45,105,110,32,98,
+    121,116,101,99,111,100,101,32,97,103,97,105,110,115,116,32,
+    115,111,117,114,99,101,95,115,116,97,116,115,32,40,105,102,
+    10,32,32,32,32,103,105,118,101,110,41,32,97,110,100,32,
+    114,101,116,117,114,110,105,110,103,32,116,104,101,32,98,121,
+    116,101,99,111,100,101,32,116,104,97,116,32,99,97,110,32,
+    98,101,32,99,111,109,112,105,108,101,100,32,98,121,32,99,
+    111,109,112,105,108,101,40,41,46,10,10,32,32,32,32,65,
+    108,108,32,111,116,104,101,114,32,97,114,103,117,109,101,110,
+    116,115,32,97,114,101,32,117,115,101,100,32,116,111,32,101,
+    110,104,97,110,99,101,32,101,114,114,111,114,32,114,101,112,
+    111,114,116,105,110,103,46,10,10,32,32,32,32,73,109,112,
+    111,114,116,69,114,114,111,114,32,105,115,32,114,97,105,115,
+    101,100,32,119,104,101,110,32,116,104,101,32,109,97,103,105,
+    99,32,110,117,109,98,101,114,32,105,115,32,105,110,99,111,
+    114,114,101,99,116,32,111,114,32,116,104,101,32,98,121,116,
+    101,99,111,100,101,32,105,115,10,32,32,32,32,102,111,117,
+    110,100,32,116,111,32,98,101,32,115,116,97,108,101,46,32,
+    69,79,70,69,114,114,111,114,32,105,115,32,114,97,105,115,
+    101,100,32,119,104,101,110,32,116,104,101,32,100,97,116,97,
+    32,105,115,32,102,111,117,110,100,32,116,111,32,98,101,10,
+    32,32,32,32,116,114,117,110,99,97,116,101,100,46,10,10,
+    32,32,32,32,78,114,106,0,0,0,122,10,60,98,121,116,
+    101,99,111,100,101,62,114,35,0,0,0,114,12,0,0,0,
+    233,8,0,0,0,233,12,0,0,0,122,30,98,97,100,32,
+    109,97,103,105,99,32,110,117,109,98,101,114,32,105,110,32,
+    123,33,114,125,58,32,123,33,114,125,122,2,123,125,122,43,
     114,101,97,99,104,101,100,32,69,79,70,32,119,104,105,108,
     101,32,114,101,97,100,105,110,103,32,116,105,109,101,115,116,
     97,109,112,32,105,110,32,123,33,114,125,122,48,114,101,97,
@@ -719,9 +720,9 @@
     95,118,97,108,105,100,97,116,101,95,98,121,116,101,99,111,
     100,101,95,104,101,97,100,101,114,160,1,0,0,115,76,0,
     0,0,0,11,6,1,12,1,13,3,6,1,12,1,10,1,
-    16,1,16,1,16,1,12,1,18,1,10,1,18,1,18,1,
-    15,1,10,1,15,1,18,1,15,1,10,1,12,1,12,1,
-    3,1,20,1,13,1,5,2,18,1,15,1,10,1,15,1,
+    16,1,16,1,16,1,12,1,18,1,13,1,18,1,18,1,
+    15,1,13,1,15,1,18,1,15,1,13,1,12,1,12,1,
+    3,1,20,1,13,1,5,2,18,1,15,1,13,1,15,1,
     3,1,18,1,13,1,5,2,18,1,15,1,9,1,114,141,
     0,0,0,99,4,0,0,0,0,0,0,0,5,0,0,0,
     6,0,0,0,67,0,0,0,115,112,0,0,0,116,0,0,