Update attn.py

models/attn.py

@@ -4,6 +4,7 @@ import mindspore.ops as ops
 from mindspore import Tensor
 from mindspore.common import dtype as mstype
 
+
 class FullAttention(nn.Module):
     def __init__(self, mask_flag=True, factor=5, scale=None, attention_dropout=0.1, output_attention=False):
         super(FullAttention, self).__init__()