changed mapping point syntax to python3

cnn_mapping/mapping_point_generator.py

@@ -440,7 +440,7 @@ def current_level_partition_blocking_2d_with_hint(loop_tiles, slb, para_count, l
 
     for slps in itertools.product(*[para_perm_1d0, para_perm_1d1]):
         slp0, slp1 = slps
-        para_index0, para_index1 = para_index_generator.next()
+        para_index0, para_index1 = next(para_index_generator)
         if set(para_index0[0]).isdisjoint(set(para_index1[0])):
             combined_slp = [a * b for a, b in list(zip(slp0, slp1))]
             para_permutation.append(combined_slp)
@@ -460,7 +460,7 @@ def current_level_partition_blocking_2d(loop_tiles, slb, para_count, layer, u_th
 
     for slps in itertools.combinations(para_perm_1d, 2):
         slp0, slp1 = slps
-        para_index0, para_index1 = para_index_generator.next()
+        para_index0, para_index1 = next(para_index_generator)
         if set(para_index0[0]).isdisjoint(set(para_index1[0])):
             combined_slp = [a * b for a, b in list(zip(slp0, slp1))]
             para_permutation.append(combined_slp)