Small update to new MakeList op.

theano/typed_list/basic.py

@@ -569,7 +569,7 @@ Returns the size of a list.
 """
 
 
-class Make_List(Op):
+class MakeList(Op):
 
     def __eq__(self, other):
         return type(self) == type(other)
@@ -584,7 +584,9 @@ class Make_List(Op):
             if not isinstance(elem, theano.gof.Variable):
                 elem = as_tensor_variable(elem)
             a2.append(elem)
-        assert all(a2[0].type == elem.type for elem in a2)
+        if not all(a2[0].type == elem.type for elem in a2):
+            raise TypeError(
+                "MakeList need all input variable to be of the same type.")
         tl = theano.typed_list.TypedListType(a2[0].type)()
 
         return Apply(self, a2, [tl])
@@ -592,9 +594,11 @@ class Make_List(Op):
     def perform(self, node, inputs, (out, )):
         out[0] = list(inputs)
 
-make_list = Make_List()
+make_list = MakeList()
 """
-Returns a list made from tuple's elements.
+Build a Python list from those Theano variable.
 
-:param a: tuple.
+:param a: tuple/list of Theano variable
+
+:note: All Theano variable must have the same type.
 """

theano/typed_list/tests/test_basic.py

@@ -10,7 +10,7 @@ from theano.tensor.type_other import SliceType
 from theano.typed_list.type import TypedListType
 from theano.typed_list.basic import (GetItem, Insert,
                                      Append, Extend, Remove, Reverse,
-                                     Index, Count, Length, make_list, Make_List)
+                                     Index, Count, Length, make_list, MakeList)
 from theano import sparse
 from theano.tests import unittest_tools as utt
 # TODO, handle the case where scipy isn't installed.
@@ -555,13 +555,13 @@ class test_length(unittest.TestCase):
         self.assertTrue(f([x, x]) == 2)
 
 
-class T_Make_List(unittest.TestCase):
+class T_MakeList(unittest.TestCase):
 
     def test_wrong_shape(self):
         a = T.vector()
         b = T.matrix()
 
-        self.assertRaises(AssertionError, make_list, (a,b))
+        self.assertRaises(TypeError, make_list, (a,b))
 
     def correct_answer(self):
         a = T.matrix()