{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "# Write a Python program to check the validity of a password (input from users).\n",
    "\n",
    "# Validation :\n",
    "\n",
    "# At least 1 letter between [a-z] and 1 letter between [A-Z].\n",
    "# At least 1 number between [0-9].\n",
    "# At least 1 character from [$#@].\n",
    "# Minimum length 6 characters.\n",
    "# Maximum length 16 characters.\n",
    "\n",
    "# Input\n",
    "# W3r@100a\n",
    "# Output\n",
    "# Valid password\n",
    "\n",
    "import re\n",
    "p= input(\"Input your password\")\n",
    "x = True\n",
    "while x:  \n",
    "    if (len(p)<6 or len(p)>12):\n",
    "        break\n",
    "    elif not re.search(\"[a-z]\",p):\n",
    "        break\n",
    "    elif not re.search(\"[0-9]\",p):\n",
    "        break\n",
    "    elif not re.search(\"[A-Z]\",p):\n",
    "        break\n",
    "    elif not re.search(\"[$#@]\",p):\n",
    "        break\n",
    "    elif re.search(\"\\s\",p):\n",
    "        break\n",
    "    else:\n",
    "        print(\"Valid Password\")\n",
    "        x=False\n",
    "        break\n",
    "\n",
    "if x:\n",
    "    print(\"Not a Valid Password\")"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.6.1"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}