bug fix:generated data has JSON object

pipeline.py

@@ -200,8 +200,8 @@ class Components :
 		
 		base_cols = list(set(_args['data'].columns) - set(args['columns']))	#-- rebuilt the dataset (and store it)
 		cols = _dc.columns.tolist()
-		# for name in cols :
+		for name in cols :
-		# 	_args['data'][name] = _dc[name]
+			_args['data'][name] = _dc[name]
 		# 	info = {"module":"generate","action":"io","input":{"rows":_dc[name].shape[0],"name":name}}
 		# 	if partition != '' :
 		# 		info['partition'] = int(partition)