Regex Use Cases.ipynb

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   "cell_type": "markdown",
   "id": "b383356f",
   "metadata": {},
   "source": [
    "# Regex Use Cases"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "af857b00",
   "metadata": {},
   "outputs": [],
   "source": [
    "import re\n",
    "\n",
    "random_text = '''\n",
    "My name is Mr. Neo. My phone number is 123-456-7890. My email is ChosenOne@gmail.com\n",
    "My name is Mr. Morphius. My phone number is 413-234-2568. My email is CoolGuy@yahoo.com. \n",
    "My name is Mrs. Trinity. My phone number is 285-036-8215. My email is ChosenOnesGirl1@apple.com.\n",
    "'''"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "adfa8b2c",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['gmail', 'yahoo', 'apple']"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "re.findall('@([a-z]+)',random_text)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "202d1183",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['gmail.com', 'yahoo.com.', 'apple.com.']"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "re.findall('@([\\w\\.]+)',random_text)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "id": "41375adb",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['ChosenOne@gmail.com', 'CoolGuy@yahoo.com.', 'ChosenOnesGirl1@apple.com.']"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "re.findall('[\\w+]+@[\\w\\.]+',random_text)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "56f35608",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['123-456-7890', '413-234-2568', '285-036-8215']"
      ]
     },
     "execution_count": 18,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "re.findall('\\d{3}-\\d{3}-\\d{4}',random_text)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "id": "c8cc1e5e",
   "metadata": {},
   "outputs": [],
   "source": [
    "my_list = ['ChosenOne@gmail.com', 'CoolGuy@yahoo.com.', 'ChosenOnesGirl1@apple.com.']"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "id": "5d3e2f33",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "['gmail.com']\n",
      "['yahoo.com.']\n",
      "['apple.com.']\n"
     ]
    }
   ],
   "source": [
    "for email in my_list:\n",
    "    print(re.findall('@([\\w\\.]+)',email))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "id": "2b3cd5c7",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "['gmail.com', 'yahoo.com.', 'apple.com.']\n"
     ]
    }
   ],
   "source": [
    "domain_list = [re.findall('@([\\w\\.]+)',email)[0] for email in my_list]\n",
    "\n",
    "print(domain_list)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "62e9a271",
   "metadata": {},
   "outputs": [],
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