Fix throw exception typo in paddle/nn/functional/loss.py (#39750)

python/paddle/distributed/fleet/layers/mpu/mp_ops.py

@@ -390,8 +390,8 @@ def _c_softmax_with_cross_entropy(
     label_dims = len(list(label.shape))
     if input_dims - 1 != label_dims and input_dims != label_dims:
         raise ValueError(
-            'Expected nput_dims - 1 = label_dims or input_dims == label_dims\
-             (got nput_dims{}, label_dims{})'.format(
+            'Expected input_dims - 1 = label_dims or input_dims == label_dims\
+             (got input_dims{}, label_dims{})'.format(
                 input_dims, label_dims
             )
         )

python/paddle/nn/functional/loss.py

@@ -2113,7 +2113,7 @@ def margin_cross_entropy(
     if input_dims - 1 != label_dims and input_dims != label_dims:
         raise ValueError(
             'Expected input_dims - 1 = label_dims or input_dims == label_dims\
-             (got nput_dims{}, label_dims{})'.format(
+             (got input_dims{}, label_dims{})'.format(
                 input_dims, label_dims
             )
         )