14 Handling Errors and Exceptions/14.3 Try-Except with Files.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "f4efd5c7",
   "metadata": {},
   "source": [
    "# Try/Except with Files"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "f35bd9ab",
   "metadata": {},
   "outputs": [
    {
     "ename": "FileNotFoundError",
     "evalue": "[Errno 2] No such file or directory: 'C:\\\\Users\\\\alexf\\\\OneDrive\\\\Documents\\\\Python Tutorials\\\\TryExceptFolder\\\\Main File2.txt'",
     "output_type": "error",
     "traceback": [
      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[1;31mFileNotFoundError\u001b[0m                         Traceback (most recent call last)",
      "\u001b[1;32m~\\AppData\\Local\\Temp\\ipykernel_1322084\\120735394.py\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[1;32m----> 1\u001b[1;33m \u001b[0mopen_file\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mopen\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;34mr'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\Main File2.txt'\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;34m'r'\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[1;31mFileNotFoundError\u001b[0m: [Errno 2] No such file or directory: 'C:\\\\Users\\\\alexf\\\\OneDrive\\\\Documents\\\\Python Tutorials\\\\TryExceptFolder\\\\Main File2.txt'"
     ]
    }
   ],
   "source": [
    "open_file = open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\Main File2.txt', 'r')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "8fd9312e",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "No File Found\n"
     ]
    }
   ],
   "source": [
    "\n",
    "#Bginning\n",
    "try:\n",
    "    open_file = open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\New Data1.txt', 'r')\n",
    "except FileNotFoundError:\n",
    "    print('No File Found')\n",
    "except Exception as e:\n",
    "    print(e)\n",
    "   \n",
    "\n",
    "#End\n",
    "with open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\Main File.txt', 'r') as read_file:\n",
    "    print(read_file.read())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "b6dcaa5d",
   "metadata": {},
   "outputs": [],
   "source": [
    "import os"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "fb158dec",
   "metadata": {},
   "outputs": [
    {
     "ename": "FileNotFoundError",
     "evalue": "[Errno 2] No such file or directory: 'C:\\\\Users\\\\alexf\\\\OneDrive\\\\Documents\\\\Python Tutorials\\\\TryExceptFolder\\\\New Data92.txt'",
     "output_type": "error",
     "traceback": [
      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[1;31mFileNotFoundError\u001b[0m                         Traceback (most recent call last)",
      "\u001b[1;32m~\\AppData\\Local\\Temp\\ipykernel_1322084\\1604016446.py\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[0;32m      7\u001b[0m     \u001b[0mprint\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0me\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m      8\u001b[0m \u001b[1;32melse\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m----> 9\u001b[1;33m     \u001b[1;32mwith\u001b[0m \u001b[0mopen\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;34mr'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\New Data92.txt'\u001b[0m\u001b[1;33m,\u001b[0m \u001b[1;34m'r'\u001b[0m\u001b[1;33m)\u001b[0m \u001b[1;32mas\u001b[0m \u001b[0mread_file\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m     10\u001b[0m         \u001b[0mappend_to_main\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mread_file\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mread\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m     11\u001b[0m         \u001b[0mprint\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;34m'Variable Created'\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
      "\u001b[1;31mFileNotFoundError\u001b[0m: [Errno 2] No such file or directory: 'C:\\\\Users\\\\alexf\\\\OneDrive\\\\Documents\\\\Python Tutorials\\\\TryExceptFolder\\\\New Data92.txt'"
     ]
    }
   ],
   "source": [
    "try:\n",
    "    if os.path.exists(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\New Data92.txt'):\n",
    "        print('It Exists!')\n",
    "except FileNotFoundError:\n",
    "    print('No File Found')\n",
    "except Exception as e:\n",
    "    print(e)\n",
    "else:\n",
    "    with open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\New Data92.txt', 'r') as read_file:\n",
    "        append_to_main = read_file.read()\n",
    "        print('Variable Created')\n",
    "    with open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\Main File.txt', 'a') as main_file:\n",
    "        main_file.write(append_to_main)\n",
    "    \n",
    "with open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\Main File.txt', 'r') as main_file:\n",
    "        print(main_file.read())   \n",
    "    "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "0311065f",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "No File Found\n",
      "This is from my Main File.\n",
      "This is from File 1.\n",
      "This is from File 1.\n",
      "\n"
     ]
    }
   ],
   "source": [
    "try:\n",
    "    with open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\New Data1.txt', 'r') as read_file:\n",
    "        append_to_main = read_file.read()\n",
    "        print('Variable Created')\n",
    "except FileNotFoundError:\n",
    "    print('No File Found')\n",
    "except Exception as e:\n",
    "    print(e)\n",
    "else:\n",
    "    with open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\Main File.txt', 'a') as main_file:\n",
    "        main_file.write(append_to_main)\n",
    "    \n",
    "with open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\Main File.txt', 'r') as main_file:\n",
    "        print(main_file.read())  "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "c96392c5",
   "metadata": {},
   "outputs": [],
   "source": [
    "#If the file exists in this directory\n",
    "#for file_name in directory:\n",
    "    file_name = file_name[0]\n",
    "\n",
    "\n",
    "try:\n",
    "    with open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\'' + file_name    +'.txt', 'r') as read_file:\n",
    "        append_to_main = read_file.read()\n",
    "        print('Variable Created')\n",
    "except FileNotFoundError:\n",
    "    print('No File Found')\n",
    "except Exception as e:\n",
    "    print(e)\n",
    "else:\n",
    "    with open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\Main File.txt', 'a') as main_file:\n",
    "        main_file.write(append_to_main)\n",
    "    \n",
    "with open(r'C:\\Users\\alexf\\OneDrive\\Documents\\Python Tutorials\\TryExceptFolder\\Main File.txt', 'r') as main_file:\n",
    "        print(main_file.read())  "
   ]
  },
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