10-tracebacks_kataDiez.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Tracebacks"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "invalid syntax. Perhaps you forgot a comma? (4034752589.py, line 2)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [13]\u001b[1;36m\u001b[0m\n\u001b[1;33m    Traceback (most recent call last):\u001b[0m\n\u001b[1;37m               ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m invalid syntax. Perhaps you forgot a comma?\n"
     ]
    }
   ],
   "source": [
    ">>> open(\"/path/to/mars.jpg\")\n",
    "Traceback (most recent call last):\n",
    "  File \"<stdin>\", line 1, in <module>\n",
    "FileNotFoundError: [Errno 2] No such file or directory: '/path/to/mars.jpg'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "invalid syntax (810294239.py, line 1)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [16]\u001b[1;36m\u001b[0m\n\u001b[1;33m    $ python3 open.py\u001b[0m\n\u001b[1;37m    ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m invalid syntax\n"
     ]
    }
   ],
   "source": [
    "$ python3 open.py\n",
    "Traceback (most recent call last):\n",
    "  File \"/tmp/open.py\", line 5, in <module>\n",
    "    main()\n",
    "  File \"/tmp/open.py\", line 2, in main\n",
    "    open(\"/path/to/mars.jpg\")\n",
    "FileNotFoundError: [Errno 2] No such file or directory: '/path/to/mars.jpg'"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Try y Except de los bloques"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "unterminated string literal (detected at line 6) (1042685291.py, line 6)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [17]\u001b[1;36m\u001b[0m\n\u001b[1;33m    Couldn't find the config.txt file!\u001b[0m\n\u001b[1;37m          ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m unterminated string literal (detected at line 6)\n"
     ]
    }
   ],
   "source": [
    ">>> try:\n",
    "...     open('config.txt')\n",
    "... except FileNotFoundError:\n",
    "...     print(\"Couldn't find the config.txt file!\")\n",
    "...\n",
    "Couldn't find the config.txt file!"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Couldn't find the config.txt file!\n"
     ]
    }
   ],
   "source": [
    "def main():\n",
    "    try:\n",
    "        configuration = open('config.txt')\n",
    "    except FileNotFoundError:\n",
    "        print(\"Couldn't find the config.txt file!\")\n",
    "\n",
    "\n",
    "if __name__ == '__main__':\n",
    "    main()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "invalid syntax (504407592.py, line 1)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [20]\u001b[1;36m\u001b[0m\n\u001b[1;33m    $ python config.py\u001b[0m\n\u001b[1;37m    ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m invalid syntax\n"
     ]
    }
   ],
   "source": [
    "$ python config.py\n",
    "Traceback (most recent call last):\n",
    "  File \"/tmp/config.py\", line 9, in <module>\n",
    "    main()\n",
    "  File \"/tmp/config.py\", line 3, in main\n",
    "    configuration = open('config.txt')\n",
    "IsADirectoryError: [Errno 21] Is a directory: 'config.txt'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {},
   "outputs": [],
   "source": [
    "def main():\n",
    "    try:\n",
    "        configuration = open('config.txt')\n",
    "    except Exception:\n",
    "        print(\"Couldn't find the config.txt file!\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "unterminated string literal (detected at line 2) (392015221.py, line 2)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [22]\u001b[1;36m\u001b[0m\n\u001b[1;33m    Couldn't find the config.txt file!\u001b[0m\n\u001b[1;37m          ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m unterminated string literal (detected at line 2)\n"
     ]
    }
   ],
   "source": [
    "$ python config.py\n",
    "Couldn't find the config.txt file!"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {},
   "outputs": [],
   "source": [
    "def main():\n",
    "    try:\n",
    "        configuration = open('config.txt')\n",
    "    except FileNotFoundError:\n",
    "        print(\"Couldn't find the config.txt file!\")\n",
    "    except IsADirectoryError:\n",
    "        print(\"Found config.txt but it is a directory, couldn't read it\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "unterminated string literal (detected at line 2) (3240732153.py, line 2)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [26]\u001b[1;36m\u001b[0m\n\u001b[1;33m    Found config.txt but couldn't read it\u001b[0m\n\u001b[1;37m                               ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m unterminated string literal (detected at line 2)\n"
     ]
    }
   ],
   "source": [
    "$ python config.py\n",
    "Found config.txt but couldn't read it"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "unterminated string literal (detected at line 3) (1767633306.py, line 3)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [29]\u001b[1;36m\u001b[0m\n\u001b[1;33m    Couldn't find the config.txt file!\u001b[0m\n\u001b[1;37m          ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m unterminated string literal (detected at line 3)\n"
     ]
    }
   ],
   "source": [
    "$ rm -f config.txt\n",
    "$ python config.py\n",
    "Couldn't find the config.txt file!"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {},
   "outputs": [],
   "source": [
    "def main():\n",
    "    try:\n",
    "        configuration = open('config.txt')\n",
    "    except FileNotFoundError:\n",
    "        print(\"Couldn't find the config.txt file!\")\n",
    "    except IsADirectoryError:\n",
    "        print(\"Found config.txt but it is a directory, couldn't read it\")\n",
    "    except (BlockingIOError, TimeoutError):\n",
    "        print(\"Filesystem under heavy load, can't complete reading configuration file\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "invalid syntax (1535621218.py, line 6)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [31]\u001b[1;36m\u001b[0m\n\u001b[1;33m    got a problem trying to read the file: [Errno 2] No such file or directory: 'mars.jpg'\u001b[0m\n\u001b[1;37m        ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m invalid syntax\n"
     ]
    }
   ],
   "source": [
    ">>> try:\n",
    "...     open(\"mars.jpg\")\n",
    "... except FileNotFoundError as err:\n",
    "...     print(\"got a problem trying to read the file:\", err)\n",
    "...\n",
    "got a problem trying to read the file: [Errno 2] No such file or directory: 'mars.jpg'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "unterminated string literal (detected at line 9) (3569964609.py, line 9)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [32]\u001b[1;36m\u001b[0m\n\u001b[1;33m    Couldn't find the config.txt file!\u001b[0m\n\u001b[1;37m          ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m unterminated string literal (detected at line 9)\n"
     ]
    }
   ],
   "source": [
    ">>> try:\n",
    "...     open(\"config.txt\")\n",
    "... except OSError as err:\n",
    "...     if err.errno == 2:\n",
    "...         print(\"Couldn't find the config.txt file!\")\n",
    "...     elif err.errno == 13:\n",
    "...         print(\"Found config.txt but couldn't read it\")\n",
    "...\n",
    "Couldn't find the config.txt file!"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Generación de Exepciones"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "metadata": {},
   "outputs": [],
   "source": [
    "def water_left(astronauts, water_left, days_left):\n",
    "    daily_usage = astronauts * 11\n",
    "    total_usage = daily_usage * days_left\n",
    "    total_water_left = water_left - total_usage\n",
    "    return f\"Total water left after {days_left} days is: {total_water_left} liters\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Total water left after 2 days is: -10 liters'"
      ]
     },
     "execution_count": 34,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    ">>> water_left(5, 100, 2)\n",
    "'Total water left after 2 days is: -10 liters'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 35,
   "metadata": {},
   "outputs": [],
   "source": [
    "def water_left(astronauts, water_left, days_left):\n",
    "    daily_usage = astronauts * 11\n",
    "    total_usage = daily_usage * days_left\n",
    "    total_water_left = water_left - total_usage\n",
    "    if total_water_left < 0:\n",
    "        raise RuntimeError(f\"There is not enough water for {astronauts} astronauts after {days_left} days!\")\n",
    "    return f\"Total water left after {days_left} days is: {total_water_left} liters\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 36,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "invalid syntax. Perhaps you forgot a comma? (4133142674.py, line 2)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [36]\u001b[1;36m\u001b[0m\n\u001b[1;33m    Traceback (most recent call last):\u001b[0m\n\u001b[1;37m               ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m invalid syntax. Perhaps you forgot a comma?\n"
     ]
    }
   ],
   "source": [
    ">>> water_left(5, 100, 2)\n",
    "Traceback (most recent call last):\n",
    "  File \"<stdin>\", line 1, in <module>\n",
    "  File \"<stdin>\", line 6, in water_left\n",
    "RuntimeError: There is not enough water for 5 astronauts after 2 days!"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "metadata": {},
   "outputs": [
    {
     "ename": "NameError",
     "evalue": "name 'alert_navigation_system' is not defined",
     "output_type": "error",
     "traceback": [
      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[1;31mRuntimeError\u001b[0m                              Traceback (most recent call last)",
      "\u001b[1;32mUntitled-1.ipynb Cell 18'\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[0;32m      <a href='vscode-notebook-cell:Untitled-1.ipynb?jupyter-notebook#ch0000031untitled?line=0'>1</a>\u001b[0m \u001b[39mtry\u001b[39;00m:\n\u001b[1;32m----> <a href='vscode-notebook-cell:Untitled-1.ipynb?jupyter-notebook#ch0000031untitled?line=1'>2</a>\u001b[0m     water_left(\u001b[39m5\u001b[39;49m, \u001b[39m100\u001b[39;49m, \u001b[39m2\u001b[39;49m)\n\u001b[0;32m      <a href='vscode-notebook-cell:Untitled-1.ipynb?jupyter-notebook#ch0000031untitled?line=2'>3</a>\u001b[0m \u001b[39mexcept\u001b[39;00m \u001b[39mRuntimeError\u001b[39;00m \u001b[39mas\u001b[39;00m err:\n",
      "\u001b[1;32mUntitled-1.ipynb Cell 16'\u001b[0m in \u001b[0;36mwater_left\u001b[1;34m(astronauts, water_left, days_left)\u001b[0m\n\u001b[0;32m      <a href='vscode-notebook-cell:Untitled-1.ipynb?jupyter-notebook#ch0000029untitled?line=4'>5</a>\u001b[0m \u001b[39mif\u001b[39;00m total_water_left \u001b[39m<\u001b[39m \u001b[39m0\u001b[39m:\n\u001b[1;32m----> <a href='vscode-notebook-cell:Untitled-1.ipynb?jupyter-notebook#ch0000029untitled?line=5'>6</a>\u001b[0m     \u001b[39mraise\u001b[39;00m \u001b[39mRuntimeError\u001b[39;00m(\u001b[39mf\u001b[39m\u001b[39m\"\u001b[39m\u001b[39mThere is not enough water for \u001b[39m\u001b[39m{\u001b[39;00mastronauts\u001b[39m}\u001b[39;00m\u001b[39m astronauts after \u001b[39m\u001b[39m{\u001b[39;00mdays_left\u001b[39m}\u001b[39;00m\u001b[39m days!\u001b[39m\u001b[39m\"\u001b[39m)\n\u001b[0;32m      <a href='vscode-notebook-cell:Untitled-1.ipynb?jupyter-notebook#ch0000029untitled?line=6'>7</a>\u001b[0m \u001b[39mreturn\u001b[39;00m \u001b[39mf\u001b[39m\u001b[39m\"\u001b[39m\u001b[39mTotal water left after \u001b[39m\u001b[39m{\u001b[39;00mdays_left\u001b[39m}\u001b[39;00m\u001b[39m days is: \u001b[39m\u001b[39m{\u001b[39;00mtotal_water_left\u001b[39m}\u001b[39;00m\u001b[39m liters\u001b[39m\u001b[39m\"\u001b[39m\n",
      "\u001b[1;31mRuntimeError\u001b[0m: There is not enough water for 5 astronauts after 2 days!",
      "\nDuring handling of the above exception, another exception occurred:\n",
      "\u001b[1;31mNameError\u001b[0m                                 Traceback (most recent call last)",
      "\u001b[1;32mUntitled-1.ipynb Cell 18'\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[0;32m      <a href='vscode-notebook-cell:Untitled-1.ipynb?jupyter-notebook#ch0000031untitled?line=1'>2</a>\u001b[0m     water_left(\u001b[39m5\u001b[39m, \u001b[39m100\u001b[39m, \u001b[39m2\u001b[39m)\n\u001b[0;32m      <a href='vscode-notebook-cell:Untitled-1.ipynb?jupyter-notebook#ch0000031untitled?line=2'>3</a>\u001b[0m \u001b[39mexcept\u001b[39;00m \u001b[39mRuntimeError\u001b[39;00m \u001b[39mas\u001b[39;00m err:\n\u001b[1;32m----> <a href='vscode-notebook-cell:Untitled-1.ipynb?jupyter-notebook#ch0000031untitled?line=3'>4</a>\u001b[0m     alert_navigation_system(err)\n",
      "\u001b[1;31mNameError\u001b[0m: name 'alert_navigation_system' is not defined"
     ]
    }
   ],
   "source": [
    "try:\n",
    "    water_left(5, 100, 2)\n",
    "except RuntimeError as err:\n",
    "    alert_navigation_system(err)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "invalid syntax. Perhaps you forgot a comma? (3158639190.py, line 2)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [38]\u001b[1;36m\u001b[0m\n\u001b[1;33m    Traceback (most recent call last):\u001b[0m\n\u001b[1;37m               ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m invalid syntax. Perhaps you forgot a comma?\n"
     ]
    }
   ],
   "source": [
    ">>> water_left(\"3\", \"200\", None)\n",
    "Traceback (most recent call last):\n",
    "  File \"<stdin>\", line 1, in <module>\n",
    "  File \"<stdin>\", line 3, in water_left\n",
    "TypeError: can't multiply sequence by non-int of type 'NoneType'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "metadata": {},
   "outputs": [],
   "source": [
    "def water_left(astronauts, water_left, days_left):\n",
    "    for argument in [astronauts, water_left, days_left]:\n",
    "        try:\n",
    "            # If argument is an int, the following operation will work\n",
    "            argument / 10\n",
    "        except TypeError:\n",
    "            # TypError will be raised only if it isn't the right type \n",
    "            # Raise the same exception but with a better error message\n",
    "            raise TypeError(f\"All arguments must be of type int, but received: '{argument}'\")\n",
    "    daily_usage = astronauts * 11\n",
    "    total_usage = daily_usage * days_left\n",
    "    total_water_left = water_left - total_usage\n",
    "    if total_water_left < 0:\n",
    "        raise RuntimeError(f\"There is not enough water for {astronauts} astronauts after {days_left} days!\")\n",
    "    return f\"Total water left after {days_left} days is: {total_water_left} liters\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 40,
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "invalid syntax. Perhaps you forgot a comma? (4094238005.py, line 2)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;36m  Input \u001b[1;32mIn [40]\u001b[1;36m\u001b[0m\n\u001b[1;33m    Traceback (most recent call last):\u001b[0m\n\u001b[1;37m               ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m invalid syntax. Perhaps you forgot a comma?\n"
     ]
    }
   ],
   "source": [
    ">>> water_left(\"3\", \"200\", None)\n",
    "Traceback (most recent call last):\n",
    "  File \"<stdin>\", line 5, in water_left\n",
    "TypeError: unsupported operand type(s) for /: 'str' and 'int'\n",
    "\n",
    "During handling of the preceding exception, another exception occurred:\n",
    "\n",
    "Traceback (most recent call last):\n",
    "  File \"<stdin>\", line 1, in <module>\n",
    "  File \"<stdin>\", line 9, in water_left\n",
    "TypeError: All arguments must be of type int, but received: '3'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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