Python: Cumulative Sum of List - How to Guide
If you're working with
Python and need to calculate the cumulative sum of a list, you've come to the right place. In this guide, we'll walk you through the steps to calculate the cumulative sum of a list using
What is a Cumulative Sum?
A cumulative sum is the sum of a sequence of numbers up to a certain point in the sequence. For example, the cumulative sum of the sequence 1, 2, 3, 4 is 1, 3, 6, 10.
Calculating the Cumulative Sum of a List in Python
To calculate the cumulative sum of a list in
Python, we can use a for loop to iterate over the list and add each value to a running total. Here's an example:
<!-- language: python --> # Define a list of numbers numbers = [1, 2, 3, 4] # Define a variable to store the running total total = 0 # Define an empty list to store the cumulative sum cumulative_sum =  # Iterate over the list of numbers for num in numbers: # Add the current number to the running total total += num # Append the running total to the cumulative sum list cumulative_sum.append(total) # Print the cumulative sum print(cumulative_sum)
In this example, we define a list of numbers and initialize variables to store the running total and cumulative sum. We then iterate over the list of numbers, adding each value to the running total and appending the running total to the cumulative sum list. Finally, we print the cumulative sum.
When we run this code, we get the following output:
[1, 3, 6, 10]
As you can see, the cumulative sum of the list [1, 2, 3, 4] is [1, 3, 6, 10].
Calculating the cumulative sum of a list in
Python is a simple task that can be accomplished using a for loop. By following the steps outlined in this guide, you should now be able to calculate the cumulative sum of any list in