diff --git a/Raksha_Regex_assignment/Regex_assignment.ipynb b/Raksha_Regex_assignment/Regex_assignment.ipynb
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+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "id": "5befa6ac",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['cat']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which gives output as:- 'cat' in str.\n",
+    "import re\n",
+    "str1 = 'cat mat bat rat'\n",
+    "\n",
+    "output = re.findall(\"c\\w\\w\", str1)\n",
+    "\n",
+    "if output:\n",
+    "    print(output)\n",
+    "else:\n",
+    "    print('No such word found')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "id": "f538eb31",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['rat']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which gives output as:- 'rat' in str.\n",
+    "\n",
+    "str1 = 'cat mat bat rat'\n",
+    "\n",
+    "output = re.findall(\"r\\w\\w\", str1)\n",
+    "\n",
+    "if output:\n",
+    "    print(output)\n",
+    "else:\n",
+    "    print('No such word found')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "id": "eea2b896",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['mat', 'man']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which gives output as:- ['mat', 'man'] in str.\n",
+    "\n",
+    "str1 = 'cat mat bat rat man'\n",
+    "\n",
+    "output = re.findall(\"m\\w\\w\", str1)\n",
+    "\n",
+    "if output:\n",
+    "    print(output)\n",
+    "else:\n",
+    "    print('No such word found')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "id": "76ce3518",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['Python', 's', 'Programming', '', 'is', 'very', 'easy', 'to', 'learn']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which gives output as:- \n",
+    "#['Python', 's', 'Programming', 'is', 'very', 'easy', 'to', 'learn'] in str.\n",
+    "\n",
+    "str1 = \"Python's Programming: is very easy to learn\"\n",
+    "\n",
+    "output = re.split(\"\\W\", str1)\n",
+    "print(output)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "3724fd64",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "#Write the regular expression and use proper method which gives output as:- Python Programming: is very easy to learn in str.\n",
+    "import re\n",
+    "str1 = \"Python's Programming: is very easy to learn\"\n",
+    "\n",
+    "#######################################################################################################"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "id": "4e4223de",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['peter', 'per', 'picked', 'peck', 'pickled', 'peppers']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which Retrieves all words starting with p.\n",
+    "#Output:- ['peter', 'per', 'picked', 'peck', 'pickled', 'peppers']\n",
+    "\n",
+    "str1 = \"peter giper picked a peck of pickled peppers\"\n",
+    "output = re.findall( \"p\\w*\" , str1)\n",
+    "print(output)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 14,
+   "id": "a0c2c73d",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['peter', 'picked', 'peck', 'pickled', 'peppers']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which Retrieves all words starting with p except 'per' which is not a separate word.\n",
+    "#Output:- ['peter', 'picked', 'peck', 'pickled', 'peppers']\n",
+    "\n",
+    "str1 = \"peter giper picked a peck of pickled peppers\"\n",
+    "output = re.findall( r\"\\bp\\w*\\b\" , str1)\n",
+    "print(output)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 17,
+   "id": "3e6e4206",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['8th', '11th']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which Retrieves all words starting with a digit.\n",
+    "#Output:- ['8th', '11th']\n",
+    "\n",
+    "str1 = 'The election in delhi will be held on 8th and result for the same will be declared on 11th'\n",
+    "output = re.findall( \"\\d\\d*\\w*\" , str1) \n",
+    "print(output)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 20,
+   "id": "a563d97b",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['peter', 'giper']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which Retrieves all words having 5 characters.\n",
+    "#Output:- ['peter', 'giper']\n",
+    "\n",
+    "str1 = \"peter giper picked a peck of pickled peppers\"\n",
+    "output = re.findall( r\"\\b\\w{5}\\b\" , str1) \n",
+    "print(output)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 21,
+   "id": "e79b595f",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['Retrieving', 'words', 'having', 'least', 'characters']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which Retrieves all words having at least 4 characters.\n",
+    "#Output:- ['Retrieving',  'words', 'having', 'least', 'characters']\n",
+    "\n",
+    "str1 = \"Retrieving all words having at least 4 characters\"\n",
+    "output = re.findall( r\"\\b\\w{4,}\\b\" , str1)\n",
+    "print(output)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 22,
+   "id": "cad45d18",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['all', 'words', 'least']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which Retrieves all words having at characters between 3 to 5 words.\n",
+    "#Output:- ['all', 'words', 'least']\n",
+    "\n",
+    "str = \"Retrieving all words having at least 4 characters\"\n",
+    "output = re.findall( r\"\\b\\w{3,5}\\b\" , str1)\n",
+    "print(output)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 23,
+   "id": "9f98ba23",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['8', '11']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which Retrieves only digits from the string.\n",
+    "#Output:- ['8', '11']\n",
+    "\n",
+    "str1 = 'The election in delhi will be held on 8 and result for the same will be declared on 11'\n",
+    "output = re.findall( \"\\d\\d*\" , str1) \n",
+    "print(output)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "3c415126",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "#Write the regular expression and use proper method which Retrieves last word if starts with c from the given string.\n",
+    "#Output:- ['characters']\n",
+    "\n",
+    "str1 = \"Retrieving all words having at least 4 characters\"\n",
+    "output = re.\n",
+    "\n",
+    "###################################################################################"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 24,
+   "id": "04a53567",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['1234567890']\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Write the regular expression and use proper method which Retrieves a phone number from the given string.\n",
+    "#Output:- 1234567890\n",
+    "\n",
+    "str1 = \"Learnbay : 1234567890\"\n",
+    "output = re.findall( \"\\d{10}\" , str1) \n",
+    "print(output)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 26,
+   "id": "9a38dc1e",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['Learnbay : ', '', '']\n"
+     ]
+    }
+   ],
+   "source": [
+    "##Write the regular expression and use proper method which Etracts name from the string but not number.\n",
+    "#Output:- Learnbay : \n",
+    "\n",
+    "str1 = \"Learnbay : 1234567890\"\n",
+    "output = re.findall( r\"\\b\\D*\\b\" , str1)\n",
+    "print(output)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 30,
+   "id": "e284beaf",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['anil', 'anant', 'ankur']\n"
+     ]
+    }
+   ],
+   "source": [
+    "##Write the regular expression and use proper method which Retrieves name starting with 'an' or 'ak'.\n",
+    "#Output:- ['anil', 'akhil', 'anant', 'ankur']\n",
+    "\n",
+    "str1 = 'anil akhil anant abhi arun arati arundhati abhijit ankur'\n",
+    "output = re.findall( r\"\\ban\\w*\\b\" or \"\\bak\\w*\\b\" , str1)\n",
+    "print(output)\n",
+    "\n",
+    "##############################################################################################"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "18fb1c69",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "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": "3.8.8"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}