diff --git a/docs/tutorial_advanced/operator_custom_with_numba.ipynb b/docs/tutorial_advanced/operator_custom_with_numba.ipynb
index e1121f5b..e4f8dd20 100644
--- a/docs/tutorial_advanced/operator_custom_with_numba.ipynb
+++ b/docs/tutorial_advanced/operator_custom_with_numba.ipynb
@@ -149,8 +149,10 @@
     "  return c, d\n",
     "\n",
     "def con_compute2(outs, ins):\n",
-    "  c, d = outs  # 取出所有的输出\n",
-    "  a, b = ins  # 取出所有的输入\n",
+    "  c = outs[0]  # take out all the outputs\n",
+    "  d = outs[1]\n",
+    "  a = ins[0]  # take out all the inputs\n",
+    "  b = ins[1]\n",
     "  c[:] = a + 1\n",
     "  d[:] = a * 2\n",
     "\n",
@@ -191,7 +193,8 @@
     "\n",
     "def con_compute3(outs, ins):\n",
     "  c = outs  # Take out all the outputs\n",
-    "  a, b = ins  # Take out all inputs\n",
+    "  a = ins[0] # Take out all inputs\n",
+    "  b = ins[1]\n",
     "  c[:] = 2.\n",
     "\n",
     "op3 = bm.CustomOpByNumba(eval_shape3, con_compute3, multiple_results=False)\n",
@@ -434,8 +437,10 @@
     "  return c, d  # 返回多个抽象数组信息\n",
     "\n",
     "def con_compute2(outs, ins):\n",
-    "  c, d = outs  # 取出所有的输出\n",
-    "  a, b = ins  # 取出所有的输入\n",
+    "  c = outs[0]  # 取出所有的输出\n",
+    "  d = outs[1]\n",
+    "  a = ins[0]  # 取出所有的输入\n",
+    "  b = ins[1]\n",
     "  c[:] = a + 1\n",
     "  d[:] = a * 2\n",
     "\n",
@@ -476,7 +481,8 @@
     "\n",
     "def con_compute3(outs, ins):\n",
     "  c = outs  # 取出所有的输出\n",
-    "  a, b = ins  # 取出所有的输入\n",
+    "  a = ins[0] # 取出所有的输入\n",
+    "  b = ins[1]\n",
     "  c[:] = 2.\n",
     "\n",
     "op3 = bm.CustomOpByNumba(eval_shape3, con_compute3, multiple_results=False)\n",