Python Program to Sum of Natural Numbers

Python Program to Sum of Natural Numbers

Sum of n natural numbers in python; In this tutorial, you will learn how do you write a Python program to find the sum of the first n natural number using while loop, for loop, and recursion function.

The sum of natural numbers formula is used to find the sum of the natural numbers up to n terms. i.e., 1 + 2 + 3 + 4 + 5 + …. up to n terms. To derive the formula, we need to use the sum of the arithmetic progression formula, because the natural numbers are arranged in an arithmetic sequence. With 1 as the first term, 1 as the common difference, and up to n terms, we use the sum of an AP = n/2(2+(n-1)). Solving this, you get the sum of natural numbers formula = [n(n+1)]/2.

Sum of Natural Numbers Formula = [n(n+1)]/2 .

Python Programs to Find/Calculate Sum Of n Natural Numbers

  • Python Program to Calculate Sum of N Natural Numbers using While Loop
  • Python Program to find Sum of N Natural Numbers using For Loop
  • Python Program to calculate Sum of N Natural Numbers using Recursion Function

Python Program to Calculate Sum of N Natural Numbers using While Loop

Follow the below steps and write a program to find the sum of first n natural numbers using while loop in python:

  • Take input number from the user
  • Iterate while loop and calculate sum of n natural number
  • As well as store value in variable
  • Print sum of n natural number
# Python Program to find Sum of N Natural Numbers
 
number = int(input("Please Enter any Number: "))

total = 0
value = 1

while (value <= number):
    total = total + value
    value = value + 1

print("The Sum of Natural Numbers from 1 to {0} =  {1}".format(number, total))

Output

Please Enter any Number: 5
The Sum of Natural Numbers from 1 to 5 =  15

Python Program to find Sum of N Natural Numbers using For Loop

Follow the below steps and write a program to find the sum of first n natural numbers using for loop in python:

  • Take input number from the user
  • Iterate for loop and calculate sum of n natural number
  • As well as store value in variable
  • Print sum of n natural number
# Python Program to find Sum of N Natural Numbers
 
number = int(input("Please Enter any Number: "))
total = 0

for value in range(1, number + 1):
    total = total + value

print("The Sum of Natural Numbers from 1 to {0} =  {1}".format(number, total))

Output

Please Enter any Number: 10
The Sum of Natural Numbers from 1 to 10 =  55

Python Program to calculate Sum of N Natural Numbers using Recursion Functions

Follow the below steps and write a program to find the sum of first n natural numbers using function in python:

  • Take input number from the user
  • Define a function, which is calcuate sum of n natural number
  • As well as store value in variable
  • Print sum of n natural number
# Python Program to find Sum of N Natural Numbers
 
def sum_of_n_natural_numbers(num):
    if(num == 0):
        return num
    else:
        return (num + sum_of_n_natural_numbers(num - 1))
    
number = int(input("Please Enter any Number: "))

total_value = sum_of_n_natural_numbers(number)

print("Sum of Natural Numbers from 1 to {0} =  {1}".format(number, total_value))

Output

Please Enter any Number: 10
The Sum of Natural Numbers from 1 to 10 =  55

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AuthorAdmin

My name is Devendra Dode. I am a full-stack developer, entrepreneur, and owner of Tutsmake.com. I like writing tutorials and tips that can help other developers. I share tutorials of PHP, Python, Javascript, JQuery, Laravel, Livewire, Codeigniter, Node JS, Express JS, Vue JS, Angular JS, React Js, MySQL, MongoDB, REST APIs, Windows, Xampp, Linux, Ubuntu, Amazon AWS, Composer, SEO, WordPress, SSL and Bootstrap from a starting stage. As well as demo example.

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