Fix strict type equality in aesara.tensor.subtensor_opt

aesara/tensor/subtensor_opt.py

@@ -11,6 +11,7 @@ from aesara.graph.opt import TopoOptimizer, copy_stack_trace, in2out, local_opti
 from aesara.tensor.basic import (
     Alloc,
     ARange,
+    MakeVector,
     Rebroadcast,
     ScalarFromTensor,
     TensorFromScalar,
@@ -67,7 +68,7 @@ from aesara.tensor.var import TensorConstant, TensorVariable
 
 
 def register_useless(lopt, *tags, **kwargs):
-    if type(lopt) == str:
+    if isinstance(lopt, str):
 
         def register(inner_lopt):
             return register_useless(inner_lopt, lopt, *tags, **kwargs)
@@ -556,7 +557,7 @@ def local_subtensor_remove_broadcastable_index(fgraph, node):
             # The idx is a Scalar, ie a Type. This means the actual index
             # is contained in node.inputs[1]
             dim_index = node.inputs[node_inputs_idx]
-            if type(dim_index) == aes.ScalarConstant:
+            if isinstance(dim_index, aes.ScalarConstant):
                 dim_index = dim_index.value
             if dim_index in [0, -1] and node.inputs[0].broadcastable[dim]:
                 remove_dim.append(dim)
@@ -707,8 +708,8 @@ def local_subtensor_make_vector(fgraph, node):
 
     """
     x = node.inputs[0]
-    if not x.owner or x.owner.op != make_vector:
-        return
+    if not x.owner or not isinstance(x.owner.op, MakeVector):
+        return False
 
     if isinstance(node.op, Subtensor):
         # This optimization needs ShapeOpt and fgraph.shape_feature