Python Data Structures That Every Beginner Should Know About 

The Python programming language is utilized in a variety of disciplines throughout the world, including website development, software engineering, artificial intelligence, data science, and more. But, for all of this to be feasible, data is critical, which implies that it must be kept effectively and accessed in a timely manner. To do this, we employ a technique known as Data Structures. So, in this post, we’ll go through the subjects in Python Data Structures.

What are data structures?

 Data structures, as the name implies, store data in the form of structures or codes. To put it another way, data aids in the storage of collections of linked data or information. The most common uses of data structures are to alter, navigate, and obtain information. They are essential in the development of real-world applications. To improve the program’s efficiency and minimize computing time, one must understand which data structures are appropriate for their current solutions.

What is the purpose of Data Structures?

 Consider the following scenario: you need to find a certain document in a file explorer that has hundreds of documents. One method is to search for the needed document one by one in a linear manner, however, this is a time-consuming procedure.

Another option is to go straight to the location where it is kept or where the associated papers are located.

Yes, your operating system (OS) accomplishes this through the use of indexing and hashtables, a form of data structure. Even if there are a lot of files, this cuts down on the time it takes to search. Data Structures are crucial in this regard.

What are the different types of Python data structures? 

Data Structures, which allow you to store and access data, are implicitly supported in Python. The data structures are as follows:





Not only that, but Python users may also design their own Data Structures, giving them complete control over their functioning. The most well-known Data Structures are as follows:




Linked List,


Hash Map

All of the aforementioned data structures are also accessible in other programming languages such as C, Java, and C++.

Python has built-in data structures

As the name implies, the Data Structures that fall under this category are built-in with Python, making programming easier and allowing programmers and Data Scientists to acquire answers much more quickly. Python has the following built-in data structures:






 Developers can use these array-like structures to store data of various types in sequential order. A unique address– called Index– is assigned to each entry in a list.

To make a list, use square brackets and place the element inside of them as needed. The append(), extend(), and insert() methods can be used to add items. The output will be nil if the list is empty.

Other functions that may be used when working with lists include:

The length of the list is returned by the len() function.

index() returns the value passed’s index value.

count() returns the number of times the value provided has been counted.

The values in the list are sorted using sorted() and sort().

To add an item to the end of a list, use append().

clear() is used to remove all items from a list.


Data is stored in a linear data structure queue in a first-in-first-out manner. A programmer, unlike a list, cannot access elements by index. They can only retrieve the next oldest ement, which makes it useful for order-sensitive activities like online order processing and voicemail storage.

Append() and pop(), on the other hand, maybe used to create a queue. Enqueue and dequeue operations are used to add and remove items from queues. Queues are used to perform actions on shared resources like a printer or a CPU core, as well as to provide temporary storage for batch systems.


 Stacks are collections of objects that support inserts and deletes using the last-in-first-out semantics. Array structures are used to create linear data structures. Unlike arrays and lists, however, stacks do not allow for random access to items.

Push is the action of adding items to a stack, whereas pop is the action of removing them. The append() function is used for push operations, whereas the pop() method is used for pop actions ().

Language processing, reversing words, undo systems in editors, and runtime memory management all employ stacks.

Linked lists

Data must be collected in a specific order. To connect to the next node in that specific list, linked lists employ rational pointers on data nodes. The head node is at the top of the tree, while the tail node is at the bottom.

Linked lists, unlike arrays, do not have objective locations in the list. Instead, they have relative locations depending on the nodes in their immediate vicinity.

Advanced data structures such as graphs and trees are created using linked lists. They serve as the foundation for sophisticated data structures.

Python lacks an in-built implementation of linked lists, necessitating the creation of a Node class to contain data values.

Circular Linked List 

Circular linked lists are formed when the nodes of a linked list are joined to create a circle, as the name implies. There is no NULL at the end of the circular linked list. Any node can be used as a starting point, and you just need to come to a halt when you reach the first node.

Circular linked lists are commonly employed for looping solutions, such as CPU scheduling, and sophisticated data structures, such as the Fibonacci Heap.


Data structures that aren’t linear Trees have both roots (where the data comes from) and nodes (where the data ends up) (data points that are made available). Trees are hierarchical data structures that are built on relationships.

All tree roots have references to all items beneath them. The child nodes are what they’re named. Every child node has its own set of child nodes. Binary trees, on the other hand, can only contain two child nodes. Sibling nodes are nodes that are on the same level. Leaf nodes are used to connect sibling nodes to child nodes.

Trees, like linked lists, are created using Node objects. In the real world, Trees are used to identify between tags in HTML pages.

Wrapping up

There you go! That’s all you need to know about Python Data Structures for now. You should enroll in python programming certification to get ahead with the vast topic. Best python certifications are available for you to take up, learn more about the world of Python and get ahead in your career.

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