Python program to find the group sum till each K in a list

When it is required to find the group sum till each K in a list, a simple iteration and the ‘append’ method are used.

Example

Below is a demonstration of the same

from collections import defaultdict

my_list = [21, 4, 37, 46, 7, 56, 7, 69, 2, 86, 1]

print("The list is :")
print(my_list)

my_key = 46
print("The key is ")
print(my_key)

my_sum = 0
my_result = []

for ele in my_list:
   if ele != my_key:
      my_sum += ele

   else:
      my_result.append(my_sum)
      my_result.append(ele)
      my_sum = 0

my_result.append(my_sum)

print("The resultant list is :")
print(my_result)

Output

The list is :
[21, 4, 37, 46, 7, 56, 7, 69, 2, 86, 1]
The key is
46
The resultant list is :
[62, 46, 228]

Explanation

• The required packages are imported into the environment.

• A list is defined and is displayed on the console.

• A key is defined and displayed on the console.

• The sum value is assigned to 0.

• An empty list is defined.

• The list is iterated over, and if the element in the list is not equal to the key value, it is added to the sum.

• Otherwise, the sum and the specific is appended to the empty list.

• The sum is reinitialized to 0.

• This sum is finally appended to the empty list.

• This is displayed as output on the console.

AmitDiwan

Updated on 20-Sep-2021 08:53:01

• Related Questions & Answers
• Program to find sum of the minimums of each sublist from a list in Python
• Program to find number of sublists with sum k in a binary list in Python
• Program to Find K-Largest Sum Pairs in Python
• Program to find the sum of largest K sublist in Python
• Python Program to find the cube of each list element
• Program to find a list of numbers where each K-sized window has unique elements in Python
• Python program to find Cumulative sum of a list
• Program to find maximum sum of popped k elements from a list of stacks in Python
• Program to find sum of concatenated pairs of all each element in a list in Python?\n
• Program to Find Out the Largest K-Divisible Subsequence Sum in Python
• Adding K to each element in a Python list of integers
• Program to find three unique elements from list whose sum is closest to k Python
• Java Program to Find Even Sum of Fibonacci Series till number N
• Program to find sum of rectangle whose sum at most k in Python
• Program to find the K-th last node of a linked list in Python