UDEMY regular exp1.ipynb

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    "# re. finding certain strings, matching texts\n",
    "\n",
    "#finding a pattern in a list\n",
    "\n",
    "import re\n",
    "\n",
    "# List of patterns to search for\n",
    "patterns = ['term1', 'term2']\n",
    "\n",
    "# Text to parse\n",
    "text = 'This is a string with term1, but it does not have the other term.'\n",
    "\n",
    "for pattern in patterns:\n",
    "    print('Searching for \"%s\" in:\\n \"%s\"\\n' %(pattern,text))\n",
    "    \n",
    "    #Check for match\n",
    "    if re.search(pattern,text):\n",
    "        print('Match was found. \\n')\n",
    "    else:\n",
    "        print('No Match was found.\\n')"
   ]
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     "data": {
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       "22"
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   "source": [
    "# List of patterns to search for\n",
    "pattern = 'term1'\n",
    "\n",
    "# Text to parse\n",
    "text = 'This is a string with term1, but it does not have the other term.'\n",
    "\n",
    "match = re.search(pattern,text)\n",
    "match.start() #where match of term1 starts\n"
   ]
  },
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       "27"
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     "execution_count": 3,
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   "source": [
    "match.end()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['this phone ', '919 and is very expensive']"
      ]
     },
     "execution_count": 4,
     "metadata": {},
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    }
   ],
   "source": [
    "# we can use re.split such as the split() in strings\n",
    "\n",
    "split_character='#'\n",
    "text='this phone #919 and is very expensive'\n",
    "re.split(split_character, text)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "# re.split returns a list, makes a list with strings\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['match', 'match']"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# finding all instances with re.findall\n",
    "\n",
    "re.findall('match','i am trying to find the word match in this phrase, there is a match here')\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [],
   "source": [
    "def multi_re_find(patterns,phrase):\n",
    "    '''\n",
    "    Takes in a list of regex patterns\n",
    "    Prints a list of all matches\n",
    "    '''\n",
    "    for pattern in patterns:\n",
    "        print('Searching the phrase using the re check: %r' %(pattern))\n",
    "        print(re.findall(pattern,phrase))\n",
    "        print('\\n')"
   ]
  },
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   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
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