fix tensor index when there is only one element in tuple

mindspore/ops/composite/multitype_ops/_compile_utils.py

@@ -267,6 +267,8 @@ def _tensor_index_by_tuple_slice(data, t):
 
 def tensor_index_by_tuple(data, tuple_index):
     """Tensor getitem by tuple of various types"""
+    if len(tuple_index) == 1:
+        return  data[tuple_index[0]]
     indexes_types = hyper_map(F.typeof, tuple_index)
     index_elements_type = const_utils.tuple_index_elements_type(indexes_types, const_utils.TENSOR_GETITEM)
     if index_elements_type == const_utils.NO_TENSOR:
@@ -430,6 +432,9 @@ def tensor_setitem_by_slice_with_number(data, input_slice, value):
 
 def tensor_setitem_by_tuple_with_number(data, tuple_index, value):
     """Assigns the tensor by tuple  with number value."""
+    if len(tuple_index) == 1:
+        data[tuple_index[0]] = value
+        return data
     indexes_types = hyper_map(F.typeof, tuple_index)
     index_elements_type = const_utils.tuple_index_elements_type(indexes_types, const_utils.TENSOR_SETITEM)
 
@@ -489,6 +494,9 @@ def tensor_setitem_by_slice_with_tensor(data, input_slice, value):
 
 def tensor_setitem_by_tuple_with_tensor(data, tuple_index, value):
     """Assigns the tensor by tuple  with tensor value."""
+    if len(tuple_index) == 1:
+        data[tuple_index[0]] = value
+        return data
     indexes_types = hyper_map(F.typeof, tuple_index)
     index_elements_type = const_utils.tuple_index_elements_type(indexes_types, const_utils.TENSOR_SETITEM)
 
@@ -509,6 +517,9 @@ def tensor_setitem_by_tuple_with_tensor(data, tuple_index, value):
 
 def tensor_setitem_by_tuple_with_tuple(data, tuple_index, value):
     """Assigns the tensor by tuple  with tuple of  value."""
+    if len(tuple_index) == 1:
+        data[tuple_index[0]] = value
+        return data
     indexes_types = hyper_map(F.typeof, tuple_index)
     index_elements_type = const_utils.tuple_index_elements_type(indexes_types, const_utils.TENSOR_SETITEM)