06 - Map, Reduce & Filter Functions.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.515315Z",
     "start_time": "2023-04-24T00:30:58.468436Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "This notebook file is for practice of Map, Reduce & Filter Functions\n"
     ]
    }
   ],
   "source": [
    "print(\"This notebook file is for practice of Map, Reduce & Filter Functions\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.874688Z",
     "start_time": "2023-04-24T00:30:58.484059Z"
    }
   },
   "outputs": [],
   "source": [
    "l = [1,2,3,4,5,6.7,7.0]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.874688Z",
     "start_time": "2023-04-24T00:30:58.593433Z"
    }
   },
   "outputs": [],
   "source": [
    "def test(l) :\n",
    "    l1 = []\n",
    "    for i in l :\n",
    "        l1.append(i**2)\n",
    "    return l1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.874688Z",
     "start_time": "2023-04-24T00:30:58.640304Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 4, 9, 16, 25, 44.89, 49.0]"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "test(l)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.890313Z",
     "start_time": "2023-04-24T00:30:58.671568Z"
    }
   },
   "outputs": [],
   "source": [
    "def sq(x) :\n",
    "    return x**2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.890313Z",
     "start_time": "2023-04-24T00:30:58.702811Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<map at 0x7f60d8016f20>"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "map(sq, l)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.890313Z",
     "start_time": "2023-04-24T00:30:58.734071Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 4, 9, 16, 25, 44.89, 49.0]"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(sq, l))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.890313Z",
     "start_time": "2023-04-24T00:30:58.765312Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 2, 3, 4, 5, 6.7, 7.0]"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "l"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.890313Z",
     "start_time": "2023-04-24T00:30:58.796561Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 4, 9, 16, 25, 44.89, 49.0]"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(sq, l))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.890313Z",
     "start_time": "2023-04-24T00:30:58.859054Z"
    }
   },
   "outputs": [],
   "source": [
    "l2 = [2,5,7,10]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.890313Z",
     "start_time": "2023-04-24T00:30:58.921561Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[4, 25, 49, 100]"
      ]
     },
     "execution_count": 11,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(sq, l2))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.890313Z",
     "start_time": "2023-04-24T00:30:58.999682Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[4, 25, 49, 100]"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(lambda x : x**2 , l2))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.905936Z",
     "start_time": "2023-04-24T00:30:59.030934Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 4, 9, 16, 25, 44.89, 49.0]"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(lambda x : x**2 , l))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.921566Z",
     "start_time": "2023-04-24T00:30:59.093433Z"
    }
   },
   "outputs": [],
   "source": [
    "l1 = [1,2,3,4,5]\n",
    "l2 = [6,7,8,9,10]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.921566Z",
     "start_time": "2023-04-24T00:30:59.171555Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[7, 9, 11, 13, 15]"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(lambda x, y : x + y, l1, l2))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.921566Z",
     "start_time": "2023-04-24T00:30:59.218439Z"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[0.5, 1.0, 1.5, 2.0, 2.5, 3.35, 3.5]"
      ]
     },
     "execution_count": 16,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(lambda y : y/2, l))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.921566Z",
     "start_time": "2023-04-24T00:30:59.234058Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 2, 3, 4, 5, 6.7, 7.0]"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "l"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.921566Z",
     "start_time": "2023-04-24T00:30:59.265308Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[6.0, 3.5, 2.6666666666666665, 2.25, 2.0]"
      ]
     },
     "execution_count": 18,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(lambda x, y : x/y, l2, l1))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.921566Z",
     "start_time": "2023-04-24T00:30:59.327814Z"
    },
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "def sum(x,y) :\n",
    "    return x + y"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.921566Z",
     "start_time": "2023-04-24T00:30:59.343434Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[7, 9, 11, 13, 15]"
      ]
     },
     "execution_count": 20,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(sum, l1, l2))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.921566Z",
     "start_time": "2023-04-24T00:30:59.374685Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[7, 9, 11, 13, 15]"
      ]
     },
     "execution_count": 21,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(lambda x, y : x + y, l1, l2))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.921566Z",
     "start_time": "2023-04-24T00:30:59.421558Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[1, 2, 3, 4, 5]\n",
      "[6, 7, 8, 9, 10]\n"
     ]
    }
   ],
   "source": [
    "print(l1)\n",
    "print(l2)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.921566Z",
     "start_time": "2023-04-24T00:30:59.452808Z"
    },
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "s = \"pwskills\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.921566Z",
     "start_time": "2023-04-24T00:30:59.484066Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'PWSKILLS'"
      ]
     },
     "execution_count": 24,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "s.upper()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:30:59.937185Z",
     "start_time": "2023-04-24T00:30:59.499688Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['P', 'W', 'S', 'K', 'I', 'L', 'L', 'S']"
      ]
     },
     "execution_count": 25,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(lambda s : s.upper(), s))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:00.843438Z",
     "start_time": "2023-04-24T00:30:59.530939Z"
    },
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "s = \"puRushoTtam\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:00.843438Z",
     "start_time": "2023-04-24T00:30:59.562181Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['P', 'U', 'R', 'U', 'S', 'H', 'O', 'T', 'T', 'A', 'M']"
      ]
     },
     "execution_count": 27,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(lambda s : s.upper(), s))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "collapsed": false
   },
   "source": [
    "# ---------- LAMBDA function ENDS here ----------"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "collapsed": false
   },
   "source": [
    "# ------------- REDUCE function starts from here -------------"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:00.843438Z",
     "start_time": "2023-04-24T00:30:59.624682Z"
    },
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "from functools import reduce"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:00.843438Z",
     "start_time": "2023-04-24T00:30:59.655935Z"
    },
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "l = [1,2,3,4,5,6,7]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.002495Z",
     "start_time": "2023-04-24T00:30:59.687198Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "28"
      ]
     },
     "execution_count": 30,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "reduce(lambda x,y : x + y, l)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.002495Z",
     "start_time": "2023-04-24T00:30:59.718445Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 2, 3, 4, 5, 6, 7]"
      ]
     },
     "execution_count": 31,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "l"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.002495Z",
     "start_time": "2023-04-24T00:30:59.749684Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "\"ERROR : Do not take 3 parameters. Only take 2 parameters.\\n---------------------------------------------------------------------------\\nTypeError                                 Traceback (most recent call last)\\nCell In[68], line 1\\n----> 1 reduce(lambda x,y,z : x + y + z, l)\\n\\nTypeError: <lambda>() missing 1 required positional argument: 'z'\\n\""
      ]
     },
     "execution_count": 32,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# reduce(lambda x,y,z : x + y + z, l)\n",
    "\n",
    "'''ERROR : Do not take 3 parameters. Only take 2 parameters.\n",
    "---------------------------------------------------------------------------\n",
    "TypeError                                 Traceback (most recent call last)\n",
    "Cell In[68], line 1\n",
    "----> 1 reduce(lambda x,y,z : x + y + z, l)\n",
    "\n",
    "TypeError: <lambda>() missing 1 required positional argument: 'z'\n",
    "'''"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.002495Z",
     "start_time": "2023-04-24T00:30:59.796563Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "5040"
      ]
     },
     "execution_count": 33,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "reduce(lambda x,y : x*y, l)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.002495Z",
     "start_time": "2023-04-24T00:30:59.827813Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 2, 3, 4, 5, 6, 7]"
      ]
     },
     "execution_count": 34,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "l"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 35,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.002495Z",
     "start_time": "2023-04-24T00:30:59.859061Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "7"
      ]
     },
     "execution_count": 35,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "reduce(lambda x,y : x if x > y else y, l)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 36,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.002495Z",
     "start_time": "2023-04-24T00:30:59.890313Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 2, 3, 4, 5, 6, 7]"
      ]
     },
     "execution_count": 36,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "l"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.127494Z",
     "start_time": "2023-04-24T00:30:59.968442Z"
    },
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "l1 = [5,4,32,65,12,100,500,25,40]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.143134Z",
     "start_time": "2023-04-24T00:31:00.234059Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "500"
      ]
     },
     "execution_count": 38,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "reduce(lambda x,y : x if x > y else y, l1)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "collapsed": false
   },
   "source": [
    "# ------------- REDUCE function ENDS here -------------"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "collapsed": false
   },
   "source": [
    "# ------------- FILTER function Starts from here -------------"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.143134Z",
     "start_time": "2023-04-24T00:31:00.343440Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 2, 3, 4, 5, 6, 7]"
      ]
     },
     "execution_count": 39,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "l"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 40,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.143134Z",
     "start_time": "2023-04-24T00:31:00.437182Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[5, 4, 32, 65, 12, 100, 500, 25, 40]"
      ]
     },
     "execution_count": 40,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "l1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 41,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.143134Z",
     "start_time": "2023-04-24T00:31:00.484055Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[2, 4, 6]"
      ]
     },
     "execution_count": 41,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(filter(lambda x : x%2 == 0, l))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 42,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.143134Z",
     "start_time": "2023-04-24T00:31:00.515308Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[False, True, False, True, False, True, False]"
      ]
     },
     "execution_count": 42,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(lambda x : x%2 == 0, l))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 43,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.143134Z",
     "start_time": "2023-04-24T00:31:00.546554Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 2, 3, 4, 5, 6, 7]"
      ]
     },
     "execution_count": 43,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "l"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 44,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.174379Z",
     "start_time": "2023-04-24T00:31:00.577806Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 3, 5, 7]"
      ]
     },
     "execution_count": 44,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(filter(lambda x : x%2 != 0, l))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 45,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.174379Z",
     "start_time": "2023-04-24T00:31:00.624692Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 2, 3, 4, 5, 6, 7]"
      ]
     },
     "execution_count": 45,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "l"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 46,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.174379Z",
     "start_time": "2023-04-24T00:31:00.655931Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[True, False, True, False, True, False, True]"
      ]
     },
     "execution_count": 46,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(map(lambda x : x%2 != 0, l))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 47,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.174379Z",
     "start_time": "2023-04-24T00:31:00.702812Z"
    },
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "l1 = [1,2,3,-4,-5,-3,5,-0]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 48,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.174379Z",
     "start_time": "2023-04-24T00:31:00.734060Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[-4, -5, -3]"
      ]
     },
     "execution_count": 48,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(filter(lambda x : x < 0, l1))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 49,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:01.174379Z",
     "start_time": "2023-04-24T00:31:00.765305Z"
    },
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "l2 = [\"puru\", \"pwskills\", \"anand\", \"patna\", \"sudh\"]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 50,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:02.381145Z",
     "start_time": "2023-04-24T00:31:00.890309Z"
    },
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['puru', 'anand', 'patna', 'sudh']"
      ]
     },
     "execution_count": 50,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(filter(lambda s : len(s) < 6, l2))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "collapsed": false
   },
   "source": [
    "# ---------------------------- END ----------------------------"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "ExecuteTime": {
     "end_time": "2023-04-24T00:31:02.412395Z",
     "start_time": "2023-04-24T00:31:01.096254Z"
    },
    "collapsed": false
   },
   "outputs": [],
   "source": []
  }
 ],
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