Moved User-Def Exceptions at the end of the notebook

Author: leriomaggio

09 Exceptions.ipynb

@@ -33,76 +33,6 @@
     "    * Implement context managers in Python 2.6, 3.0, and later (optional in 2.5)."
    ]
   },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "## User Defined Exceptions"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {
-    "collapsed": true
-   },
-   "outputs": [],
-   "source": [
-    "class AlreadyGotOne(Exception): \n",
-    "    pass\n",
-    "\n",
-    "def gail():\n",
-    "    raise AlreadyGotOne()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 2,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "got exception\n"
-     ]
-    }
-   ],
-   "source": [
-    "try:\n",
-    "    gail()\n",
-    "except AlreadyGotOne:\n",
-    "    print('got exception')"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 3,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [
-    {
-     "ename": "Career",
-     "evalue": "So I became a waiter...",
-     "output_type": "error",
-     "traceback": [
-      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
-      "\u001b[0;31mCareer\u001b[0m                                    Traceback (most recent call last)",
-      "\u001b[0;32m<ipython-input-3-8d4820e9348e>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      2\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0m__str__\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m \u001b[0;32mreturn\u001b[0m \u001b[0;34m'So I became a waiter...'\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      3\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 4\u001b[0;31m \u001b[0;32mraise\u001b[0m \u001b[0mCareer\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
-      "\u001b[0;31mCareer\u001b[0m: So I became a waiter..."
-     ]
-    }
-   ],
-   "source": [
-    "class Career(Exception):\n",
-    "    def __str__(self): return 'So I became a waiter...'\n",
-    "    \n",
-    "raise Career()"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -116,23 +46,17 @@
    "source": [
     "```\n",
     "try:\n",
-    "    statements \n",
-    "except name1:\n",
+    "    statements           # Run this main action first\n",
+    "except name1:            # Run if name1 is raised during try block\n",
     "    statements\n",
-    "except (name2, name3):\n",
+    "except (name2, name3):   # Run if any of these exceptions occur\n",
     "    statements \n",
-    "except name4 as var:\n",
+    "except name4 as var:     # Run if name4 is raised, assign instance raised to var \n",
     "    statements\n",
-    "except:\n",
+    "except:                  # Run for all other exceptions raised\n",
     "    statements\n",
     "else:\n",
-    "    statements\n",
-    "\n",
-    "# Run this main action first\n",
-    "# Run if name1 is raised during try block\n",
-    "# Run if any of these exceptions occur\n",
-    "# Run if name4 is raised, assign instance raised to var # Run for all other exceptions raised\n",
-    "# Run if no exception was raised during try block\n",
+    "    statements           # Run if no exception was raised during try block\n",
     "```"
    ]
   },
@@ -330,6 +254,83 @@
     "    raise TypeError()\n",
     "    print('not reached')"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## User Defined Exceptions"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": [
+    "class AlreadyGotOne(Exception): \n",
+    "    pass\n",
+    "\n",
+    "def gail():\n",
+    "    raise AlreadyGotOne()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "got exception\n"
+     ]
+    }
+   ],
+   "source": [
+    "try:\n",
+    "    gail()\n",
+    "except AlreadyGotOne:\n",
+    "    print('got exception')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false,
+    "scrolled": true
+   },
+   "outputs": [
+    {
+     "ename": "Career",
+     "evalue": "So I became a waiter of Engineer",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[0;31mCareer\u001b[0m                                    Traceback (most recent call last)",
+      "\u001b[0;32m<ipython-input-2-d663e503fce1>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      8\u001b[0m         \u001b[0;32mreturn\u001b[0m \u001b[0;34m'So I became a waiter of {}'\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mformat\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_job\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      9\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 10\u001b[0;31m \u001b[0;32mraise\u001b[0m \u001b[0mCareer\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m'Engineer'\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
+      "\u001b[0;31mCareer\u001b[0m: So I became a waiter of Engineer"
+     ]
+    }
+   ],
+   "source": [
+    "class Career(Exception):\n",
+    "    \n",
+    "    def __init__(self, job, *args, **kwargs):\n",
+    "        super(Career, self).__init__(*args, **kwargs)\n",
+    "        self._job = job\n",
+    "    \n",
+    "    def __str__(self): \n",
+    "        return 'So I became a waiter of {}'.format(self._job)\n",
+    "    \n",
+    "raise Career('Engineer')"
+   ]
   }
  ],
  "metadata": {