Hint

Not sure how to start?

First, ask the user for the start and end of the range using input() and convert them to integers:

start = int(input("Enter the start of the range: "))
end = int(input("Enter the end of the range: "))

Next, write a simple function that adds up all the numbers from start to end:

def sum_range(start, end):
    total = 0
    for num in range(start, end + 1):
        total += num
    return total

Finally, call your function and print the result:

print(sum_range(start, end))

Remember: range(start, end + 1) makes sure the end number is included in the sum.