fix

x2paddle/core/program.py

@@ -493,7 +493,7 @@ class PaddleGraph(object):
                 gen_codes(["paddle.disable_static()",
                            "params, _ = fluid.load_dygraph('{}/model')".format(code_dir),
                            "model = {}()".format(self.name),
-                           "model.set_dict(params, use_structured_name={})".format(use_structured_name),,
+                           "model.set_dict(params, use_structured_name={})".format(use_structured_name),
                            "model.eval()",
                            "out = model({})".format(input_data_name),
                            "return out"], indent=1))
@@ -636,4 +636,4 @@ class PaddleGraph(object):
                 print("[DyGraph2StaticGraph Error] Can not convert the dygraph to static! The output of PyTorch mustbe Variable or a list of Variable.")
             else:
                 print(e)
-                exit(0)
\ No newline at end of file
+                exit(0)