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How to Find the Cumulative Sum in Python

Submitted by razormist on Saturday, September 14, 2024 - 23:48.

In this tutorial, we will program "How to Find the Cumulative Sum in Python." We will learn how to efficiently calculate the cumulative sum of numbers within a given list. The objective is to safely retrieve the cumulative sum at each point 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'll be able to do it yourself with ease. The program I’ll show you demonstrates the proper way to calculate the cumulative sum. I'll do my best to provide a simple method for finding the cumulative sum of 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 Cumulative(lists):
  2.         cu_list = []
  3.         length = len(lists)
  4.         cu_list = [sum(lists[0:x:1]) for x in range(0, length+1)]
  5.         return cu_list[1:]
  6.  
  7.  
  8. ret = False
  9.  
  10. while True:
  11.         print("\n================= Find the Cumulative Sum =================\n\n")
  12.  
  13.         lists = [5, 10, 15, 20, 25]
  14.  
  15.         print("Original Number: ", lists)
  16.         print("\n")
  17.         print ("Cumulative Number: ", Cumulative(lists))
  18.  
  19.         opt = input("\nDo you want to try again?(yes/no): ")
  20.  
  21.         if opt.lower() == 'yes':
  22.                 ret=False
  23.         elif opt.lower() == 'no':
  24.                 ret=True
  25.                 print("Exiting program....")
  26.  
  27.         else:
  28.                 print("Please enter yes/no:")
  29.                 break
  30.  
  31.         if ret == False:
  32.                 continue

This Python script calculates the cumulative sum of a list of numbers using the Cumulative function. The cumulative sum is the running total at each index. The program displays the original list and its cumulative sum, then asks the user if they want to try again. The loop continues until the user chooses to exit.

Output:

There you have it we successfully created How to Find the Cumulative Sum in 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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