Make the error message for when the time data and format do not match clearer.

Lib/_strptime.py

@@ -306,7 +306,7 @@ def strptime(data_string, format="%a %b %d %H:%M:%S %Y"):
         _cache_lock.release()
     found = format_regex.match(data_string)
     if not found:
-        raise ValueError("time data did not match format:  data=%s  fmt=%s" %
+        raise ValueError("time data %r does not match format %r" %
                          (data_string, format))
     if len(data_string) != found.end():
         raise ValueError("unconverted data remains: %s" %

Misc/NEWS

@@ -56,6 +56,9 @@ Core and builtins
 Library
 -------
 
+- Made the error message for time.strptime when the data data and format do
+  match be more clear.
+
 - Fix a bug in traceback.format_exception_only() that led to an error
   being raised when print_exc() was called without an exception set.
   In version 2.4, this printed "None", restored that behavior.