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    Python Basic

    List Append Method

    By Meenakshi AgarwalUpdated:Oct 07, 2023No Comments3 Mins Read
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    In this Python programming class, we’ll cover the list append method, its purpose, syntax, flowchart, and examples. Please note that the lists are the main constructs to implement a sequence in Python.

     List Append in Python

    Good Morning, we wish you had a great day. Today, we are going to teach a list method known as Append in Python.

    It is one of the essential methods that you learn in a short while.

    Before reading this tutorial, please polish your knowledge of Lists in Python. We will be teaching according to the Python 3 syntax. If required, you may modify them for other versions.

    • Introduction to Append
    • Implementation
    • Program Examples
    • Time Complexity

    Introduction to Append

    Append() is a method that allows us to append an item to a list, i.e., we can insert an element at the end of the list. It is a built-in method in python. It is one of the methods along with the extend() method which can modify a list. To call it, you need to use the following syntax.

    list.append(item or object)

    Here the object can be of any type, i.e., list, element, dictionary, numbers, strings, alphanumeric characters, etc.

    It modifies the original list by adding an item to the end of the list. It does not have a return value.

    Implementation

    This method is meant only for lists. It primarily takes an item from the user and adds it to the end of the list.

    The below flowchart demonstrates the functioning of the list append method:

    List Append Flowchart

    Here is a sample program to show how to use the list append method:

    List = ["23", "34", "help", "linux", "ls", "%6jwe"]
    
    List.append("Unix")
    
    print (List)

    The below image shows the output:

    See also  Shallow Copy vs. Deep Copy in Python

    List Append Example

    List Append Examples

    1. Appending an Element to the List

    Car = ["Mercedes Benz", "Audi", "BMW"]
    
    Car.append("Mahindra & Mahindra, Maruti Suzuki, TATA Motors")
    
    print (Car)

    The output of the above program is as follows.

    List Append Example-1

    2. Appending a List to a List

    color = ["orange", "blue", "green"]
    
    rainbow = ["purple", "teal", "cyan"]
    
    color.append(rainbow)
    
    print (color)

    The output of the above program is as follows.

    List Append Example-2

    The difference between outputs after appending an element to a list and list to a list is the way access takes place.

    In the above example, to access blue in the updated color list, we can type “print (color[1])” whereas if we want to access purple, we need to issue the “print (color[3][0])” command.

    Time Complexity

    The time complexity is O(1) which means that the List Append method has a constant interval of time for each input it appends to a list.

    It does not consider the different amount of time for different inputs.

    Previous ArticleWhen to Prefer Yield Over Return in Python
    Next Article Python Module Explained with Examples
    Meenakshi Agarwal

    I'm Meenakshi Agarwal, founder of TechBeamers.com, with 10+ years of experience in Software development, testing, and automation. Proficient in Python, Java, Selenium, SQL, & C-Sharp, I create tutorials, quizzes, exercises and interview questions on diverse tech topics. Follow my tutorials for valuable insights!

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