Issue #27895:  Spelling fixes (Contributed by Ville Skyttä).
diff --git a/Objects/stringlib/formatter.h b/Objects/stringlib/formatter.h
index 1ac6277..70f574c 100644
--- a/Objects/stringlib/formatter.h
+++ b/Objects/stringlib/formatter.h
@@ -141,7 +141,7 @@
 
 
 #if 0
-/* Occassionally useful for debugging. Should normally be commented out. */
+/* Occasionally useful for debugging. Should normally be commented out. */
 static void
 DEBUG_PRINT_FORMAT_SPEC(InternalFormatSpec *format)
 {