You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
def calculate_sum(n):
    """Function to calculate the sum of the first n numbers."""
    sum = 0
    while n > 0:
        sum = sum + n
        n = n - 1
    return sum

if __name__ == "__main__":
    n = 5 
    result = calculate_sum(n)
    print("The sum is", result)
user
The sum is 15
assistant