Fix test with python 32bit

theano/tensor/tests/test_basic.py

@@ -6578,10 +6578,11 @@ class test_arithmetic_cast(unittest.TestCase):
 
 class T_long_tensor(unittest.TestCase):
     def test_fit_int64(self):
-        for exp in xrange(64):
+        for exp in xrange(gof.python_int_bitwidth()):
             val = L(2 ** exp - 1)
             scalar_ct = constant(val)
-            assert scalar_ct.dtype.startswith('int'), scalar_ct.dtype
+
+            assert scalar_ct.dtype.startswith('int'), (exp, val, scalar_ct.dtype)
             assert scalar_ct.value == val
 
             vector_ct = constant([val, val])