Massive patch by Skip Montanaro to add ":name" to as many
PyArg_ParseTuple() format string arguments as possible.
diff --git a/Modules/dbmmodule.c b/Modules/dbmmodule.c
index 7a234a2..501c3f4 100644
--- a/Modules/dbmmodule.c
+++ b/Modules/dbmmodule.c
@@ -286,7 +286,7 @@
 	int iflags;
 	int mode = 0666;
 
-        if ( !PyArg_ParseTuple(args, "s|si", &name, &flags, &mode) )
+        if ( !PyArg_ParseTuple(args, "s|si:open", &name, &flags, &mode) )
 		return NULL;
 	if ( strcmp(flags, "r") == 0 )
 		iflags = O_RDONLY;