{"id":1907,"date":"2022-11-18T09:37:57","date_gmt":"2022-11-18T09:37:57","guid":{"rendered":"https:\/\/pickl.ai\/blog\/?p=1907"},"modified":"2025-04-09T05:30:22","modified_gmt":"2025-04-09T05:30:22","slug":"what-is-data-structure-in-python-types-classifications-applications","status":"publish","type":"post","link":"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/","title":{"rendered":"What Is Data Structure in Python? Classify, Code &amp; Apply"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Summary:<\/strong> This blog simplifies what is data structure in Python, covering types, classifications, and real-life examples. Learn how Python structures like lists, stacks, and dictionaries help store and manage data efficiently. Discover practical use cases and best practices, and explore how they connect with modern data science applications.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#What_Are_Data_Structures\" >What Are Data Structures?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Why_Are_Data_Structures_Important\" >Why Are Data Structures Important?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Built-in_vs_User-defined_Data_Structures\" >Built-in vs. User-defined Data Structures<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Classification_of_Data_Structures\" >Classification of Data Structures<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Linear_vs_Non-linear_Structures\" >Linear vs Non-linear Structures<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Mutable_vs_Immutable_Types\" >Mutable vs Immutable Types<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Coding_Core_Python_Data_Structures\" >Coding Core Python Data Structures<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Lists_Store_Items_in_Order\" >Lists: Store Items in Order<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Tuples_Fixed_and_Ordered_Data\" >Tuples: Fixed and Ordered Data<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Sets_Unique_Items_Only\" >Sets: Unique Items Only<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Dictionaries_Key-Value_Pairs\" >Dictionaries: Key-Value Pairs<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Real-World_Applications_and_Use_Cases\" >Real-World Applications and Use Cases<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Organising_Data_in_Real_Life\" >Organising Data in Real Life<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Fast_Lookups_with_Dictionaries\" >Fast Lookups with Dictionaries<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Undo_Options_Using_Stacks\" >Undo Options Using Stacks<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Best_Practices_for_Choosing_a_Data_Structure\" >Best Practices for Choosing a Data Structure<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Wrapping_Up\" >Wrapping Up<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#What_is_a_data_structure_in_Python_used_for\" >What is a data structure in Python used for?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#What_are_the_types_of_data_structures_in_Python\" >What are the types of data structures in Python?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.pickl.ai\/blog\/what-is-data-structure-in-python-types-classifications-applications\/#How_are_data_structures_used_in_data_science\" >How are data structures used in data science?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 id=\"introduction\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span><strong>Introduction<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ever wondered how your phone knows what message to show first or how apps store your data so neatly? That\u2019s the magic of data structures! In this blog, we\u2019ll break down what a data structure in <a href=\"https:\/\/pickl.ai\/blog\/gigantic-python\/\">Python<\/a> is in the simplest way possible.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Think of data structures as smart containers that help you organise and use your data better. And guess what? Python makes it super fun and easy to learn!&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By the end, you\u2019ll know how to classify data structures, write code using them, and even apply them to real-world tasks. So, grab your curious brain\u2014we\u2019re diving in!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Key Takeaways<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Data structures help efficiently organise, manage, and store data in Python programs.<\/li>\n\n\n\n<li>Python offers built-in (list, tuple, set, dict) and user-defined (stack, queue) structures.<\/li>\n\n\n\n<li>Classify them as linear vs non-linear and mutable vs immutable for better understanding.<\/li>\n\n\n\n<li>Real-life uses include undo operations, quick lookups, and data organisation.<\/li>\n\n\n\n<li>Mastering Python data structures is essential for careers in data science and development.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"what-are-data-structures\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Are_Data_Structures\"><\/span><strong>What Are Data Structures?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Data structures are special ways to store and organise <a href=\"https:\/\/pickl.ai\/blog\/difference-between-data-and-information\/\">data<\/a> in a computer so we can use it easily and quickly. Think of them like different containers \u2014 some are good for holding lists of items, some for pairing things together, and others for keeping things in order.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In Python, <a href=\"https:\/\/pickl.ai\/blog\/operations-on-data-structure\/\">data structures<\/a> help us manage data smoothly when building programs, apps, or websites.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, a Python list can be used to make a shopping list. A dictionary can be used to look up a phone number using a name. Each data structure has its own purpose.<\/p>\n\n\n\n<h3 id=\"why-are-data-structures-important\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_Are_Data_Structures_Important\"><\/span><strong>Why Are Data Structures Important?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">They make your code cleaner, faster, and easier to understand. Choosing the right structure can save time and memory, especially when working with large data. It\u2019s like picking the right tool for the job \u2014 using a hammer when you need a screwdriver won\u2019t help.<\/p>\n\n\n\n<h3 id=\"built-in-vs-user-defined-data-structures\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Built-in_vs_User-defined_Data_Structures\"><\/span><strong>Built-in vs. User-defined Data Structures<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Python comes with built-in data structures like <strong>lists, tuples, sets<\/strong>, and <strong>dictionaries<\/strong> \u2014 these are ready to use right away. On the other hand, <strong>user-defined data structures<\/strong> like <strong>stacks, queues<\/strong>, or <strong>linked lists<\/strong> are created by programmers using Python code to meet specific needs.<\/p>\n\n\n\n<h2 id=\"classification-of-data-structures\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Classification_of_Data_Structures\"><\/span><strong>Classification of Data Structures<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXdFWhctfj3XA7eCjnCZ_aK6pCXq-2vz_LIAfe2CtSVtNs_IXNaOnOlEBJa4e8xTprY8dE2e8CcszIgrCKUq6ahh5-4pB324lhd5gfYrpGRUKK09EBrhQmQPTEqi0Au0oKIp87VJ0Q?key=9ZBTygy2Fypy9MoCpMpfjA\" alt=\"Infographic showing classification of data structures.\u00a0\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">It\u2019s helpful to know the types of data structures, which fall into different categories based on how they manage and store information, to understand how data is stored and organised in Python.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In this section, we\u2019ll explore two important ways to classify them: Linear vs Non-linear and Mutable vs Immutable data structures. We\u2019ll also look at simple examples to make things easy to understand.<\/p>\n\n\n\n<h3 id=\"linear-vs-non-linear-structures\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Linear_vs_Non-linear_Structures\"><\/span><strong>Linear vs Non-linear Structures<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Linear data structures<\/strong> organise data in a straight line. Think of it like a queue at a ticket counter\u2014everyone is lined up one after the other. You can go from one element to the next in a specific order. Common examples include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>List<\/strong>: A group of items where each item has a position (index). Example: [&#8220;apple&#8221;, &#8220;banana&#8221;, &#8220;cherry&#8221;]<\/li>\n\n\n\n<li><strong>Stack<\/strong>: Think of a stack of plates\u2014you can only add or remove the top plate. It follows the Last-In, First-Out (LIFO) rule.<\/li>\n\n\n\n<li><strong>Queue<\/strong>: Like a line of people waiting. The first one to enter is the first one to leave\u2014First-In, First-Out (FIFO) rule.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Non-linear data structures<\/strong> store data in a more complex way. Here, elements are connected like branches of a tree or nodes in a web. They don\u2019t follow a single sequence.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tree<\/strong>: A structure where each element has a parent and can have multiple children. Think of a family tree.<\/li>\n\n\n\n<li><strong>Graph<\/strong>: A collection of points (called nodes) connected by lines. These are great for showing networks like social media connections.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"mutable-vs-immutable-types\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mutable_vs_Immutable_Types\"><\/span><strong>Mutable vs Immutable Types<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The terms <strong>mutable<\/strong> and <strong>immutable<\/strong> tell us whether we can change the content of a data structure after creating it.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mutable<\/strong> means you can change, add, or remove elements.\n<ul class=\"wp-block-list\">\n<li>Example: <strong>List<\/strong> \u2013 You can add more items to a shopping list.<\/li>\n\n\n\n<li>Example: <strong>Dictionary<\/strong> \u2013 You can change the value for a specific key.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Immutable<\/strong> means once created, you cannot change the data.\n<ul class=\"wp-block-list\">\n<li>Example: <strong>Tuple<\/strong> \u2013 It\u2019s like a frozen list. You can look at it but not edit it.<\/li>\n\n\n\n<li>Example: <strong>String<\/strong> \u2013 Even though it looks like a list of characters, you can&#8217;t change individual letters.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 id=\"coding-core-python-data-structures\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Coding_Core_Python_Data_Structures\"><\/span><strong>Coding Core Python Data Structures<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Understanding how to use Python&#8217;s basic data structures is an essential step for anyone learning programming. These structures\u2014Lists, Tuples, Sets, and Dictionaries\u2014help you store and organise data in simple and useful ways. Let\u2019s explore each one with clear examples to help you learn how to use them in your own code.<\/p>\n\n\n\n<h3 id=\"lists-store-items-in-order\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Lists_Store_Items_in_Order\"><\/span><strong>Lists: Store Items in Order<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <a href=\"https:\/\/pickl.ai\/blog\/reversing-a-list-in-python\/\">list<\/a> is like a shopping list. It keeps items in the order you add them and allows duplicates.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Syntax:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXeO7E7m5xNgXVhHNJeANeHT7giz0IJpUXPO0niFYLW7kVVNZSUGBhcbLEs8UxntJC9hQM5Yja4sgkpwx9Y4AN5eKXb98cHzgzwd-9cLpy7wG_PcDk8nQIUjvSP3QNB4gIIeih-LnA?key=9ZBTygy2Fypy9MoCpMpfjA\" alt=\"Create a list of fruits\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common Operations:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Add an item: fruits.append(&#8216;orange&#8217;)<\/li>\n\n\n\n<li>Access an item: fruits[1] (gives &#8216;banana&#8217;)<\/li>\n\n\n\n<li>Remove an item: fruits.remove(&#8216;apple&#8217;)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Lists are <strong>changeable<\/strong>, so you can update or delete items easily.<\/p>\n\n\n\n<h3 id=\"tuples-fixed-and-ordered-data\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tuples_Fixed_and_Ordered_Data\"><\/span><strong>Tuples: Fixed and Ordered Data<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <a href=\"https:\/\/pickl.ai\/blog\/tuples-in-python\/\">tuple<\/a> is like a list, but it cannot be changed after creation. Use it when your data should stay the same.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Syntax:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXf7IuCwOUTQOMZe5TKGRp5WfFc1vPn6avBWFl5I-Uw05B8wDLrdhwpNJ5aW8Ci2xxRDbwyO4VcBQ5drOEDd-qOJ9BYEguBeNRR2Zruc6Nwrd1Lay7ZGPA6bzKpOwhe2XrSafhjHnA?key=9ZBTygy2Fypy9MoCpMpfjA\" alt=\"Define a tuple with two numbers\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Operations:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Access an item: coordinates[0] (gives 10)<\/li>\n\n\n\n<li>Count items: coordinates.count(10)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tuples are <strong>faster<\/strong> and <strong>secure<\/strong>, great for fixed data like days of the week or coordinates.<\/p>\n\n\n\n<h3 id=\"sets-unique-items-only\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sets_Unique_Items_Only\"><\/span><strong>Sets: Unique Items Only<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A set is like a bag of different things where no item repeats. It\u2019s great for removing duplicates.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Syntax:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXdQjzs8h0j_zNYgawLu5bz2r1gOzeojpKmgFA1TSjoxmb2dVrRCGRJJlQ15xZ8HIQgI3OiJwCQ3pEvPlqEI8q6jLEajMK983SSX3DrIaYQCjDxp2zT3ydt1IqS9LFyVOiTZlu1x?key=9ZBTygy2Fypy9MoCpMpfjA\" alt=\"Create a set of colors\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common Operations:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Add an item: colors.add(&#8216;yellow&#8217;)<\/li>\n\n\n\n<li>Remove an item: colors.discard(&#8216;red&#8217;)<\/li>\n\n\n\n<li>Check common items: colors1 &amp; colors2<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Sets are <strong>unordered<\/strong>, and they automatically ignore repeated values.<\/p>\n\n\n\n<h3 id=\"dictionaries-key-value-pairs\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dictionaries_Key-Value_Pairs\"><\/span><strong>Dictionaries: Key-Value Pairs<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A dictionary is like a real dictionary. Each word (key) has a meaning (value). It&#8217;s great for labeled data.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Syntax:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXdPTKlgZu6U1_V3dH0qmj7py5eGbNtfZ96uISnpBqBUonyLXm2QWudhazqhXXYMlKeWg33AmxxLqMQsHZRFato66sUYKRPwo5qRNJJDA8KGSjmzC9iEzxxLovn-sggu3iV2Hp78CQ?key=9ZBTygy2Fypy9MoCpMpfjA\" alt=\"Create a dictionary with name and age\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common Operations:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Access a value: person[&#8216;name&#8217;] (gives &#8216;Alice&#8217;)<\/li>\n\n\n\n<li>Add or change a value: person[&#8216;age&#8217;] = 26<\/li>\n\n\n\n<li>Remove a key: del person[&#8216;age&#8217;]<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Dictionaries are powerful for storing and retrieving data quickly.<\/p>\n\n\n\n<h2 id=\"real-world-applications-and-use-cases\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Real-World_Applications_and_Use_Cases\"><\/span><strong>Real-World Applications and Use Cases<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Data structures are not just concepts in books\u2014they are tools used every day by developers to build apps, websites, and software that we all use. Whether it&#8217;s managing your social media feed or saving your progress in a game, data structures make it all work smoothly behind the scenes.<\/p>\n\n\n\n<h3 id=\"organising-data-in-real-life\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Organising_Data_in_Real_Life\"><\/span><strong>Organising Data in Real Life<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Imagine you run a small store and want to keep track of the items you sell. Use a list to write down the names of all products. In the same way, programmers use <a href=\"https:\/\/developers.google.com\/edu\/python\/lists\" rel=\"nofollow\"><strong>lists in Python<\/strong><\/a> to store and organise data like names, numbers, or files.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This helps sort, filter, and manage large amounts of information quickly.<\/p>\n\n\n\n<h3 id=\"fast-lookups-with-dictionaries\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Fast_Lookups_with_Dictionaries\"><\/span><strong>Fast Lookups with Dictionaries<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Think of a <strong>dictionary in Python<\/strong> like a contact list on your phone\u2014each name is linked to a number. In the tech world, developers use Python dictionaries to store key-value pairs.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, a developer might store cities as keys and temperatures as values when building a weather app. This makes it fast and easy to look up any city&#8217;s weather.<\/p>\n\n\n\n<h3 id=\"undo-options-using-stacks\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Undo_Options_Using_Stacks\"><\/span><strong>Undo Options Using Stacks<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Have you ever pressed &#8220;undo&#8221; in a text editor? Behind the scenes, a <strong>stack data structure<\/strong> remembers your recent actions. It works like a stack of plates\u2014whatever goes in last comes out first. Developers use this to build features like undo, redo, or even backtracking in games and navigation apps.<\/p>\n\n\n\n<h3 id=\"best-practices-for-choosing-a-data-structure\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Best_Practices_for_Choosing_a_Data_Structure\"><\/span><strong>Best Practices for Choosing a Data Structure<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To choose the right data structure, consider your goal. Do you need to store things in order? Use a list. Need quick lookups? Use a dictionary. Want to track actions in reverse? Pick a stack. Matching the right tool to the task makes apps faster, wiser, and more reliable.<\/p>\n\n\n\n<h2 id=\"wrapping-up\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Wrapping_Up\"><\/span><strong>Wrapping Up<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Understanding what is data structure in Python is key to writing efficient, readable, and scalable code\u2014skills every programmer and data scientist needs. Whether building a to-do app or working on a machine learning project, choosing the right data structure shapes your program&#8217;s performance.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Python\u2019s built-in and user-defined data structures make it easier to manage complex datasets, a vital skill in data science. Want to sharpen your skills further? Join <a href=\"https:\/\/www.pickl.ai\/\">Pickl.AI\u2019s data science courses<\/a> and learn how to use data structures effectively while working on real-world data problems. Start your journey toward becoming a data expert today!<\/p>\n\n\n\n<h2 id=\"frequently-asked-questions\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span><strong>Frequently Asked Questions<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 id=\"what-is-a-data-structure-in-python-used-for\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_a_data_structure_in_Python_used_for\"><\/span><strong>What is a data structure in Python used for?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A data structure in Python stores, organises, and manages data efficiently. It helps with tasks like searching, sorting, and updating data. These structures are essential for developing fast and optimised programs, especially in data analysis and real-time applications.<\/p>\n\n\n\n<h3 id=\"what-are-the-types-of-data-structures-in-python\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_are_the_types_of_data_structures_in_Python\"><\/span><strong>What are the types of data structures in Python?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Python supports both built-in and user-defined data structures. Built-in types include lists, tuples, sets, and dictionaries. User-defined structures, such as stacks, queues, linked lists, trees, and graphs, are created using classes and are used to solve specific data handling problems.<\/p>\n\n\n\n<h3 id=\"how-are-data-structures-used-in-data-science\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_are_data_structures_used_in_data_science\"><\/span><strong>How are data structures used in data science?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In data science, data structures organise and process large datasets efficiently. Lists and dictionaries help with data manipulation, while stacks and queues manage tasks and memory. They are crucial for building algorithms, machine learning models, and effectively managing structured and unstructured data.<\/p>\n","protected":false},"excerpt":{"rendered":"Understand what is data structure in Python and how to use it in coding, apps, and data science tasks.\n","protected":false},"author":19,"featured_media":21164,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[46,134],"tags":[387,386,384,382,385,391,390,383,388,389,381],"ppma_author":[2186,2185],"class_list":["post-1907","post","type-post","status-publish","format-standard","has-post-thumbnail","category-data-science","category-python-programming","tag-data-structures-and-algorithms-in-python","tag-data-structures-in-python-geeksforgeeks","tag-data-structures-in-python-interview-questions","tag-data-structures-in-python-tutorial","tag-data-structures-in-python-w3schools","tag-linear-data-structure","tag-non-linear-data-structure","tag-python-data-types","tag-structure-in-python-example","tag-user-defined-data-structures-in-python","tag-what-is-data-structure-in-python"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.3 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What Is Data Structure in Python? 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