add password validator hack

_notebooks/Foundation/2024-09-24-team_teach.ipynb

@@ -260,6 +260,164 @@
    "source": [
     " - Use Case: Combine a list of strings into a single string, helpful for reformatting content"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Sample Hack - Password Validator"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Simple Password Validator"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Password is valid! Here’s a fun version: HelloWorldabc\n"
+     ]
+    }
+   ],
+   "source": [
+    "def password_validator(password):\n",
+    "    if len(password) < 8:\n",
+    "        return \"Password too short. Must be at least 8 characters.\"\n",
+    "\n",
+    "    if password == password.lower() or password == password.upper():\n",
+    "        return \"Password must contain both uppercase and lowercase letters.\"\n",
+    "\n",
+    "    if not any(char.isdigit() for char in password):\n",
+    "        return \"Password must contain at least one number.\"\n",
+    "\n",
+    "    # Optional\n",
+    "    password = password.replace(\"123\", \"abc\")\n",
+    "\n",
+    "    words = password.split(\" \")\n",
+    "    customized_password = \"-\".join(words)\n",
+    "\n",
+    "    return f\"Password is valid! Here’s a fun version: {customized_password}\"\n",
+    "\n",
+    "# Example usage\n",
+    "password = \"HelloWorld123\"\n",
+    "print(password_validator(password))\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Password must contain both uppercase and lowercase letters.\n"
+     ]
+    }
+   ],
+   "source": [
+    "print(password_validator(\"HELLO123\"))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Password is valid! Here’s a fun version: Helloabc\n"
+     ]
+    }
+   ],
+   "source": [
+    "print(password_validator(\"Hello123\"))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Advanced Password Validator"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Password is valid and Strong! Here’s a fun version: HiWorld13475!\n"
+     ]
+    }
+   ],
+   "source": [
+    "import re\n",
+    "\n",
+    "def password_validator(password):\n",
+    "    if len(password) < 8:\n",
+    "        return \"Password too short. Must be at least 8 characters.\"\n",
+    "    \n",
+    "    if password == password.lower() or password == password.upper():\n",
+    "        return \"Password must contain both uppercase and lowercase letters.\"\n",
+    "    \n",
+    "    if not any(char.isdigit() for char in password):\n",
+    "        return \"Password must contain at least one number.\"\n",
+    "    \n",
+    "    if not re.search(r\"[!@#$%^&*()_+]\", password):\n",
+    "        return \"Password must contain at least one special character (e.g. !, @, #, etc.)\"\n",
+    "    \n",
+    "    common_passwords = [\"password\", \"123456\", \"letmein\", \"qwerty\"]\n",
+    "    if password.lower() in common_passwords:\n",
+    "        return \"Password is too common. Choose something less predictable.\"\n",
+    "    \n",
+    "    sequential_patterns = [\"123\", \"abc\", \"xyz\"]\n",
+    "    for pattern in sequential_patterns:\n",
+    "        if pattern in password.lower():\n",
+    "            return \"Password should not contain sequential characters like '123' or 'abc'.\"\n",
+    "    \n",
+    "    score = 0\n",
+    "    if len(password) >= 10:\n",
+    "        score += 1\n",
+    "    if re.search(r\"[A-Z]\", password) and re.search(r\"[a-z]\", password):\n",
+    "        score += 1\n",
+    "    if re.search(r\"\\d\", password):\n",
+    "        score += 1\n",
+    "    if re.search(r\"[!@#$%^&*()_+]\", password):\n",
+    "        score += 1\n",
+    "\n",
+    "    strength = \"Weak\"\n",
+    "    if score == 2:\n",
+    "        strength = \"Medium\"\n",
+    "    elif score >= 3:\n",
+    "        strength = \"Strong\"\n",
+    "\n",
+    "    password = password.replace(\"Hello\", \"Hi\")\n",
+    "    words = password.split(\" \")\n",
+    "    customized_password = \"-\".join(words)\n",
+    "\n",
+    "    return f\"Password is valid and {strength}! Here’s a fun version: {customized_password}\"\n",
+    "\n",
+    "# Example usage\n",
+    "password = \"HelloWorld13475!\"\n",
+    "print(password_validator(password))\n",
+    "\n"
+   ]
   }
  ],
  "metadata": {