Zip Function - Parallel Iteration.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# zip() gives an iterator"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "- using zip function we can iterate through multiple iterables.\n",
    "- it gives an iterable zip object we can use for or next on it"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 69,
   "metadata": {},
   "outputs": [],
   "source": [
    "lst1 = [\"Abhishek\", \"Maity\", \"John\"]\n",
    "lst2 = ['a', 'm', 'j']\n",
    "lst3 = [1,2,3]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 70,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<zip at 0x193f4318188>"
      ]
     },
     "execution_count": 70,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "output = zip(lst1, lst2, lst3)\n",
    "output"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 71,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Abhishek a 1\n",
      "Maity m 2\n",
      "John j 3\n"
     ]
    }
   ],
   "source": [
    "for i,j,k in output:\n",
    "    print(i,j,k)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 51,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "('Abhishek', 'a')"
      ]
     },
     "execution_count": 51,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "next(output)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 52,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[('Maity', 'm'), ('John', 'j')]"
      ]
     },
     "execution_count": 52,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "list(output)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 47,
   "metadata": {},
   "outputs": [],
   "source": [
    "for i in output:\n",
    "    print(i)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 103,
   "metadata": {},
   "outputs": [],
   "source": [
    "dict1 = {'name' : 'Abhishek', 'lstname' : 'maity', 'age' : 23}\n",
    "dict2 = {'name' : 'Ria', 'lstname' : 'maity', 'age' : 21}\n",
    "\n",
    "out = zip(dict1.items(), dict2.items())\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 104,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "dict_items([('name', 'Abhishek'), ('lstname', 'maity'), ('age', 23)])"
      ]
     },
     "execution_count": 104,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "dict1.items()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 105,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(('name', 'Abhishek'), ('name', 'Ria'))"
      ]
     },
     "execution_count": 105,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "next(out)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 106,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "lstname maity\n",
      "lstname maity\n",
      "age 23\n",
      "age 21\n"
     ]
    }
   ],
   "source": [
    "for (i,j),(i2,j2) in out:\n",
    "    print(i,j)\n",
    "    print(i2,j2)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 146,
   "metadata": {},
   "outputs": [],
   "source": [
    "dict1 = {'name' : 'Abhishek', 'lstname' : 'maity', 'age' : 23}\n",
    "dict2 = {'name' : 'Ria', 'lstname' : 'maity', 'age' : 21}\n",
    "\n",
    "ans = zip(dict1, dict2)\n",
    "\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 147,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "('name', 'name')\n",
      "('lstname', 'lstname')\n",
      "('age', 'age')\n"
     ]
    }
   ],
   "source": [
    "for i in ans:\n",
    "    print(i)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 133,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "name name\n",
      "lstname lstname\n",
      "age age\n"
     ]
    }
   ],
   "source": [
    "for i,j in ans:\n",
    "    print(i,j)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 120,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "tuple"
      ]
     },
     "execution_count": 120,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "a = ('adff', 'asdfas')\n",
    "type(a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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