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Array Summation Function in Python

In this exercise, you will develop a Python program to calculate the sum of the elements in an array. The main function should look like this: def main(): example = [20, 10, 5, 2] print("The sum of the example array is {}".format(sum_elements(example))). You must define the function sum_elements, and it will be called from within the main function. As shown in the example, it must accept an array as a parameter and return the sum of its elements. This exercise is perfect for practicing function definition and calling in Python. By implementing this function and calling it from the main function, you will gain hands-on experience in handling function definitions and calls in Python. This exercise not only reinforces your understanding of functions but also helps you develop efficient coding practices for managing user interactions.



Group

Mastering Functions in Python

Objective

Develop a Python program to calculate the sum of the elements in an array. The main function should look like this:

def main():
example = [20, 10, 5, 2]
print("The sum of the example array is {}".format(sum_elements(example)))

You must define the function `sum_elements`, and it will be called from within the main function. As shown in the example, it must accept an array as a parameter and return the sum of its elements.

Example Python Exercise

 Copy Python Code 
# Define the function sum_elements which calculates the sum of the elements in the array
def sum_elements(arr):
    total = 0  # Initialize the total sum to 0
    for num in arr:  # Loop through each number in the array
        total += num  # Add the number to the total sum
    return total  # Return the total sum

# Main function to call sum_elements and display the result
def main():
    example = [20, 10, 5, 2]  # Define the example array
    # Print the sum of the elements in the example array
    print("The sum of the example array is {}".format(sum_elements(example)))  # Call the function and format the result

# Call the main function to execute the program
main()

 Output

The sum of the example array is 37

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