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How to Swap Element in List using Python

Submitted by razormist on Wednesday, August 28, 2024 - 23:45.

In this tutorial, we will program 'How to Swap Elements in a List using Python.' We will learn how to swap elements within a list. The objective is to quickly swap two elements in the list. I will provide a sample program to demonstrate the actual coding process in this tutorial.

This topic is very easy to understand. Just follow the instructions I provide, and you will be able to do it yourself with ease. The program I will show you covers the basics of programming for swapping elements in a list. I will do my best to provide you with a simple method for changing the index positions of elements in a list. So, let's start coding.

Getting Started:

First you will have to download & install the Python IDLE's, here's the link for the Integrated Development And Learning Environment for Python https://www.python.org/downloads/.

Creating Main Function

This is the main function of the application. The following code will display a simple GUI in terminal console that will display program. To do this, simply copy and paste these blocks of code into the IDLE text editor.
  1. def swapElement(list, pos1, pos2):
  2.        
  3.         list[pos1], list[pos2] = list[pos2], list[pos1]
  4.         return list
  5.  
  6.  
  7. ret = False
  8.  
  9.  
  10. while True:
  11.         print("\n================= Swap Element in List =================\n\n")
  12.  
  13.  
  14.         List = [53, 21, 54, 34, 34]
  15.         pos1, pos2 = 2, 5
  16.  
  17.         print("Original List: ", List)
  18.         print("\n")
  19.         print("Swap List: ", swapElement(List, pos1-1, pos2-1))
  20.  
  21.         opt = input("\nDo you want to try again?(yes/no): ")
  22.  
  23.         if opt.lower() == 'yes':
  24.                 ret=False
  25.         elif opt.lower() == 'no':
  26.                 ret=True
  27.                 print("Exiting program....")
  28.  
  29.         else:
  30.                 print("Please enter yes/no:")
  31.                 break
  32.  
  33.         if ret == False:
  34.                 continue

This Python script swaps two elements in a list. The swapElement function takes a list and two positions, swaps the elements at those positions, and returns the modified list. The script repeatedly swaps the elements at positions 2 and 5 in the predefined list [53, 21, 54, 34, 34], displays the original and swapped lists, and then asks the user if they want to try again. The loop continues until the user decides to stop.

Output:


There you have it we successfully created How to Swap Element in List using Python. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!

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