diff --git a/examples/001_example/001.ipynb b/examples/001_example/001.ipynb
index 3caec0f3eec5f85c9fbad528defa13f89895ee1e..94b942de1fdfa9174efc63a382e91ecec843a1e6 100644
--- a/examples/001_example/001.ipynb
+++ b/examples/001_example/001.ipynb
@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "markdown",
-   "id": "709283b4",
+   "id": "8114a275",
    "metadata": {},
    "source": [
     "Let aussume that we need to make this computation\n",
@@ -24,7 +24,7 @@
   {
    "cell_type": "code",
    "execution_count": 1,
-   "id": "ff6ab8d0",
+   "id": "2263dcb4",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -35,7 +35,7 @@
   {
    "cell_type": "code",
    "execution_count": 2,
-   "id": "71eb56f4",
+   "id": "06366b27",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -60,7 +60,7 @@
   {
    "cell_type": "code",
    "execution_count": 3,
-   "id": "e58f9d94",
+   "id": "b3538e96",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -75,7 +75,7 @@
   {
    "cell_type": "code",
    "execution_count": 4,
-   "id": "83d64c0e",
+   "id": "6f68ad18",
    "metadata": {},
    "outputs": [
     {
@@ -114,7 +114,7 @@
   {
    "cell_type": "code",
    "execution_count": 5,
-   "id": "8a64d9ce",
+   "id": "346457b6",
    "metadata": {},
    "outputs": [
     {
@@ -156,7 +156,7 @@
   {
    "cell_type": "code",
    "execution_count": 6,
-   "id": "7b08541c",
+   "id": "a88d1b31",
    "metadata": {},
    "outputs": [
     {
@@ -206,22 +206,22 @@
   {
    "cell_type": "code",
    "execution_count": 7,
-   "id": "f4a65e8e",
+   "id": "b7e9a224",
    "metadata": {},
    "outputs": [],
    "source": [
     "# we can also modify the submit command\n",
     "if False:\n",
-    "    for i, node in enumerate(root.leaves):\n",
-    "        if i>3:\n",
-    "            print(i)\n",
-    "            node.submit_command = f'condor_submit run.sub -batch-name square_root'"
+    "for i, node in enumerate(root.leaves):\n",
+    "    if i>3:\n",
+    "        print(i)\n",
+    "        node.submit_command = f'condor_submit run.sub -batch-name square_root'"
    ]
   },
   {
    "cell_type": "code",
    "execution_count": 8,
-   "id": "c5218b5d",
+   "id": "4e0373c0",
    "metadata": {},
    "outputs": [
     {
@@ -243,7 +243,7 @@
   {
    "cell_type": "code",
    "execution_count": 9,
-   "id": "42ee35ce",
+   "id": "16e2e0b7",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -253,7 +253,7 @@
   {
    "cell_type": "code",
    "execution_count": 10,
-   "id": "0a14d92a",
+   "id": "ebffa95a",
    "metadata": {},
    "outputs": [
     {
@@ -282,7 +282,7 @@
   {
    "cell_type": "code",
    "execution_count": 25,
-   "id": "eea5d4a7",
+   "id": "1dc15a4f",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -299,7 +299,7 @@
   {
    "cell_type": "code",
    "execution_count": 12,
-   "id": "256c5c69",
+   "id": "686da9ab",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -317,7 +317,7 @@
   {
    "cell_type": "code",
    "execution_count": 13,
-   "id": "91dff0cb",
+   "id": "9d9db8e5",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -336,7 +336,7 @@
   {
    "cell_type": "code",
    "execution_count": 14,
-   "id": "2a39303e",
+   "id": "93e71fc5",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -347,7 +347,7 @@
   {
    "cell_type": "code",
    "execution_count": 15,
-   "id": "b2e57e4b",
+   "id": "230e71ee",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -358,7 +358,7 @@
   {
    "cell_type": "code",
    "execution_count": 16,
-   "id": "734792fd",
+   "id": "78d67569",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -370,7 +370,7 @@
   {
    "cell_type": "code",
    "execution_count": 17,
-   "id": "8e41a894",
+   "id": "1db375fa",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -384,7 +384,7 @@
   {
    "cell_type": "code",
    "execution_count": 18,
-   "id": "2276f255",
+   "id": "03bd9fee",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -395,7 +395,7 @@
   {
    "cell_type": "code",
    "execution_count": 19,
-   "id": "03dcbf0b",
+   "id": "1c4e1436",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -405,7 +405,7 @@
   {
    "cell_type": "code",
    "execution_count": 20,
-   "id": "99cce676",
+   "id": "8a89e5f6",
    "metadata": {},
    "outputs": [
     {
@@ -433,7 +433,7 @@
   {
    "cell_type": "code",
    "execution_count": 22,
-   "id": "2a88a22b",
+   "id": "461b8fb9",
    "metadata": {},
    "outputs": [
     {
@@ -479,7 +479,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "fa51e5c2",
+   "id": "7c2971ee",
    "metadata": {},
    "outputs": [],
    "source": []
diff --git a/examples/001_example/001_chronjob.py b/examples/001_example/001_chronjob.py
index 7cf3830fa9a737f53fdf637d524bbaf1c4575515..7ea6dcde82440c81b40f1100136c1e6f4ec8fdd5 100644
--- a/examples/001_example/001_chronjob.py
+++ b/examples/001_example/001_chronjob.py
@@ -22,7 +22,7 @@ from tree_maker import NodeJob
 try:
     root=tree_maker.tree_from_yaml(
     f'/home/jovyan/local_host_home/CERNBox/2021/tree_maker/examples/001_example/study_000/tree.yaml')
-except exception as e:
+except Exception as e:
     print(e)
     print('Probably you forgot to edit the address of you yaml file...')