{"id":9034,"date":"2021-09-30T14:00:47","date_gmt":"2021-09-30T08:30:47","guid":{"rendered":"https:\/\/python-programs.com\/?p=9034"},"modified":"2021-11-22T18:34:35","modified_gmt":"2021-11-22T13:04:35","slug":"python-program-to-map-two-lists-into-a-dictionary","status":"publish","type":"post","link":"https:\/\/python-programs.com\/python-program-to-map-two-lists-into-a-dictionary\/","title":{"rendered":"Python Program to Map Two Lists into a Dictionary using Zip(), Append() Functions | How to Combine Two Lists into a Dictionary?"},"content":{"rendered":"<p>Our website provided core <a href=\"https:\/\/python-programs.com\/python-programming-examples-with-output\/\">java programs examples with output<\/a> aid beginners and expert coders to test their knowledge gap and learn accordingly.<\/p>\n<p><strong>Dictionaries in Python: <\/strong>In Python, a dictionary dict is a one-to-one mapping; it includes a set of (key, value) pairs, with each key mapped to a value. It exemplifies a hash map or hash table (from Computer Science). Each key denotes a value and is separated by a colon (:).<\/p>\n<p>Curly brackets are used to define a dictionary. The value to the left of the colon is known as the key, while the value to the right of the colon is known as the value. A comma separates each (key, value) pair.<\/p>\n<ul>\n<li><a href=\"#Python_Programming_Examples_on_How_to_Map_Two_Lists_into_a_Dictionary\">Python Programming Examples on How to Map Two Lists into a Dictionary<\/a><\/li>\n<li><a href=\"#Python_Program_to_Map_Two_Lists_into_a_Dictionary\">Python Program to Map Two Lists into a Dictionary<\/a><\/li>\n<li><a href=\"#Write_a_Python_Program_to_Map_Two_Lists_into_a_Dictionary?\">Write a Python Program to Map Two Lists into a Dictionary?<\/a><\/li>\n<li><a href=\"#How_to_Combine_Two_Lists_into_a_Dictionary_Python?\">How to Combine Two Lists into a Dictionary Python?<\/a><\/li>\n<li><a href=\"#Python_Program_to_Map_Two_lists_into_a_Dictionary_using_Dictionary_Comprehension\">Python Program to Map Two lists into a Dictionary using Dictionary Comprehension<\/a><\/li>\n<li><a href=\"#How_to_Combine_Two_List_and_Convert_into_Dictionary_using_For_Loop?\">How to Combine Two List and Convert into Dictionary using For Loop?<\/a><\/li>\n<\/ul>\n<h2><a id=\"Python_Programming_Examples_on_How_to_Map_Two_Lists_into_a_Dictionary\"><\/a>Python Programming Examples on How to Map Two Lists into a Dictionary<\/h2>\n<p><strong>Example 1:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Enter number of elements to be added to the dictionary = 8\r\nEnter the keys : \r\nEnter the key1 = hello\r\nEnter the key2 = this\r\nEnter the key3 = is\r\nEnter the key4 = btechgeeks\r\nEnter the key5 = online\r\nEnter the key6 = coding\r\nEnter the key7 = python\r\nEnter the key8 = platform\r\nEnter the Values : \r\nEnter the value1 = 45\r\nEnter the value2 = 82\r\nEnter the value3 = 125\r\nEnter the value4 = 962\r\nEnter the value5 = 712\r\nEnter the value6 = 100\r\nEnter the value7 = 852\r\nEnter the value8 = 965<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre>The resultant dictionary with keys = ['hello', 'this', 'is', 'btechgeeks', 'online', 'coding', 'python', 'platform'] \r\nvalues = [45, 82, 125, 962, 712, 100, 852, 965] :\r\n{'hello': 45, 'this': 82, 'is': 125, 'btechgeeks': 962, 'online': 712, 'coding': 100, 'python': 852, 'platform': 965}<\/pre>\n<p><strong>Example 2:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Enter number of elements to be added to the dictionary = 5\r\nEnter the keys : \r\nEnter the key1 = good\r\nEnter the key2 = morning\r\nEnter the key3 = python\r\nEnter the key4 = script\r\nEnter the key5 = code\r\nEnter the Values : \r\nEnter the value1 = 745\r\nEnter the value2 = 123\r\nEnter the value3 = 985\r\nEnter the value4 = 100\r\nEnter the value5 = 585<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre>The resultant dictionary with keys = ['good', 'morning', 'python', 'script', 'code'] \r\nvalues = [745, 123, 985, 100, 585] :\r\n{'good': 745, 'morning': 123, 'python': 985, 'script': 100, 'code': 585}<\/pre>\n<h2><a id=\"Python_Program_to_Map_Two_Lists_into_a_Dictionary\"><\/a>Python Program to Map Two Lists into a Dictionary<\/h2>\n<h3>Mapping Two Lists into a Dictionary using zip() ,append() Functions<\/h3>\n<p><strong>Approach:<\/strong><\/p>\n<ol>\n<li>Declare two empty lists one to store keys and the other to store values.<\/li>\n<li>Consider using a for loop to accept values for both lists.<\/li>\n<li>Scan the number of elements to be added to the dictionary and store it in a variable.<\/li>\n<li>Scan the values into the list and insert them into the list using another for loop.<\/li>\n<li>Repeat steps 4 and 5 for the values list as well.<\/li>\n<li>Zip the two lists together and use dict() to turn them into a dictionary.<\/li>\n<li>Print the dictionary.<\/li>\n<li>Exit of program.<\/li>\n<\/ol>\n<h3><a id=\"Write_a_Python_Program_to_Map_Two_Lists_into_a_Dictionary?\"><\/a>Write a Python Program to Map Two Lists into a Dictionary?<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># Declare two empty lists one to store keys and the other to store values.\r\nkeyslist = []\r\nvalueslist = []\r\n# Scan the number of elements to be added to the dictionary and store it in a variable.\r\nnumb = int(input(\"Enter number of elements to be added to the dictionary = \"))\r\nprint(\"Enter the keys : \")\r\nfor p in range(numb):\r\n  # scanning the keys\r\n    keyelement = input(\"Enter the key\"+str(p+1)+\" = \")\r\n    keyslist.append(keyelement)\r\nprint(\"Enter the Values : \")\r\nfor p in range(numb):\r\n    # scanning the values\r\n    valueelement = int(input(\"Enter the value\"+str(p+1)+\" = \"))\r\n    valueslist.append(valueelement)\r\n# Zip the two lists together and use dict() to turn them into a dictionary.\r\nresultdict = dict(zip(keyslist, valueslist))\r\n# printing the dictionary\r\nprint(\"The resultant dictionary with keys =\",\r\n      keyslist, \"values =\", valueslist, \":\")\r\nprint(resultdict)\r\n<\/pre>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-17437\" src=\"https:\/\/python-programs.com\/wp-content\/uploads\/2021\/06\/Python-Program-to-Map-Two-Lists-into-Dictionary-Using-Zip-and-Append-Functions.png\" alt=\"Python Program to Map Two Lists into Dictionary Using Zip and Append Functions\" width=\"883\" height=\"600\" srcset=\"https:\/\/python-programs.com\/wp-content\/uploads\/2021\/06\/Python-Program-to-Map-Two-Lists-into-Dictionary-Using-Zip-and-Append-Functions.png 883w, https:\/\/python-programs.com\/wp-content\/uploads\/2021\/06\/Python-Program-to-Map-Two-Lists-into-Dictionary-Using-Zip-and-Append-Functions-300x204.png 300w, https:\/\/python-programs.com\/wp-content\/uploads\/2021\/06\/Python-Program-to-Map-Two-Lists-into-Dictionary-Using-Zip-and-Append-Functions-768x522.png 768w\" sizes=\"(max-width: 883px) 100vw, 883px\" \/><\/p>\n<p><strong>Output:<\/strong><\/p>\n<pre>Enter number of elements to be added to the dictionary = 8\r\nEnter the keys : \r\nEnter the key1 = hello\r\nEnter the key2 = this\r\nEnter the key3 = is\r\nEnter the key4 = btechgeeks\r\nEnter the key5 = online\r\nEnter the key6 = coding\r\nEnter the key7 = python\r\nEnter the key8 = platform\r\nEnter the Values : \r\nEnter the value1 = 45\r\nEnter the value2 = 82\r\nEnter the value3 = 125\r\nEnter the value4 = 962\r\nEnter the value5 = 712\r\nEnter the value6 = 100\r\nEnter the value7 = 852\r\nEnter the value8 = 965\r\nThe resultant dictionary with keys = ['hello', 'this', 'is', 'btechgeeks', 'online', 'coding', 'python', 'platform'] values = [45, 82, 125, 962, 712, 100, 852, 965] :\r\n{'hello': 45, 'this': 82, 'is': 125, 'btechgeeks': 962, 'online': 712, 'coding': 100, 'python': 852, 'platform': 965}<\/pre>\n<h3><a id=\"How_to_Combine_Two_Lists_into_a_Dictionary_Python?\"><\/a>How to Combine Two Lists into a Dictionary Python?<\/h3>\n<ul>\n<li>The number of elements in the list must be entered by the user and saved in a variable.<\/li>\n<li>The user must assign values to the equal number of entries in the list.<\/li>\n<li>The append function takes each element from the user and appends it to the end of the list as many times as the number of elements taken is.<\/li>\n<li>The identical steps as in 2 and 3 are taken for the second value list.<\/li>\n<li>The zip() function is used to combine the two lists.<\/li>\n<li>Using dict, the zipped lists are then combined to make a dictionary ().<\/li>\n<li>The dictionary created by combining the two lists is then printed.<\/li>\n<\/ul>\n<h3><a id=\"Python_Program_to_Map_Two_lists_into_a_Dictionary_using_Dictionary_Comprehension\"><\/a>Python Program to Map Two lists into a Dictionary using Dictionary Comprehension<\/h3>\n<p>Dictionary Comprehension is a technique used to create a dictionary in Python. In this process, we will combine two sets of data either in lists or arrays. It is a simple approach for creating dictionaries and uses pointed brackets({}).<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">items = ['book', 'pen', 'paper']\r\nquantities = [5, 10, 25]\r\nitems_dict = {key:value for key, value in zip(items, quantities)}\r\n\r\nprint(items_dict)<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">{'book': 5, 'pen': 10, 'paper': 25}<\/pre>\n<h3><a id=\"How_to_Combine_Two_List_and_Convert_into_Dictionary_using_For_Loop?\"><\/a>How to Combine Two List and Convert into Dictionary using For Loop?<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">fruits = ['Orange', 'Pomegranate', 'Banana','Guava']\r\nprice = [80, 70, 112, 66]\r\n\r\nfruits_price = zip(fruits, price)\r\n\r\n# create dictionary\r\nfruits_dict = {}\r\n\r\nfor key, value in fruits_price:\r\nif key in fruits_dict:\r\n# handling duplicate keys\r\npass\r\nelse:\r\nfruits_dict[key] = value\r\n\r\nprint(fruits_dict)<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">{'Orange': 80, 'Pomegranate': 70, 'Banana': 112, 'Guava': 66}<\/pre>\n<p><strong>Related Programs<\/strong>:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-count-the-frequency-of-words-appearing-in-a-string-using-a-dictionary\/\">Python Program to Count the Frequency of Words Appearing in a String Using a Dictionary<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-iterate-through-two-lists-in-parallel\/\">Python Program to Iterate Through Two Lists in Parallel<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-generate-a-dictionary-that-contains-numbers-between-1-and-n-in-the-form-x-xx\/\">Python Program to Generate a Dictionary that Contains Numbers (between 1 and n) in the Form (x, x*x).<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-add-a-key-value-pair-to-the-dictionary\/\">Python Program to Add a Key, Value Pair to the Dictionary<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-sum-all-the-items-in-a-dictionary\/\">Python Program to Sum All the Items in a Dictionary<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Our website provided core java programs examples with output aid beginners and expert coders to test their knowledge gap and learn accordingly. Dictionaries in Python: In Python, a dictionary dict is a one-to-one mapping; it includes a set of (key, value) pairs, with each key mapped to a value. It exemplifies a hash map or &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/python-programs.com\/python-program-to-map-two-lists-into-a-dictionary\/\"> <span class=\"screen-reader-text\">Python Program to Map Two Lists into a Dictionary using Zip(), Append() Functions | How to Combine Two Lists into a Dictionary?<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":7,"featured_media":9037,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[5],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python Program to Map Two Lists into a Dictionary using Zip(), Append() Functions | How to Combine Two Lists into a Dictionary? - Python Programs<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/python-programs.com\/python-program-to-map-two-lists-into-a-dictionary\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python Program to Map Two Lists into a Dictionary using Zip(), Append() Functions | How to Combine Two Lists into a Dictionary? - Python Programs\" \/>\n<meta property=\"og:description\" content=\"Our website provided core java programs examples with output aid beginners and expert coders to test their knowledge gap and learn accordingly. 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Dictionaries in Python: In Python, a dictionary dict is a one-to-one mapping; it includes a set of (key, value) pairs, with each key mapped to a value. It exemplifies a hash map or &hellip; Python Program to Map Two Lists into a Dictionary using Zip(), Append() Functions | How to Combine Two Lists into a Dictionary? 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