diff --git a/x2paddle/project_convertor/pytorch/torch2paddle/varbase.py b/x2paddle/project_convertor/pytorch/torch2paddle/varbase.py
index 166653ee1b7c90c6261041e883f6fc1efebe8e96..b42648e7772e73b48500e1d59580953239bcf3be 100644
--- a/x2paddle/project_convertor/pytorch/torch2paddle/varbase.py
+++ b/x2paddle/project_convertor/pytorch/torch2paddle/varbase.py
@@ -24,7 +24,7 @@ def is_condition_one(idx):
     a[mask, :]
     a[mask, ...]
     """
-    if not (isinstance(idx[0], paddle.Tensor) and \
+    if not (isinstance(idx[0], paddle.Tensor) and
             idx[0].dtype == paddle_dtypes.t_bool):
         return False
     if len(idx) == 1:
@@ -94,6 +94,7 @@ def __getitem__(self, idx):
         else:
             return out
 
+
 VarBase = core.eager.Tensor
 
 VarBase.__getitem__ = __getitem__