17 | Hard one

What it is is:

sum_numbers.py

# This program calculates the sum of a series
# of numbers entered by the user.

MAX = 5   # The maximum number

# Initialize an accumulator variable.
total = 0.0
   
# Explain what we are doing.
print('This program calculates the sum of ', end='')
print(f'{MAX} numbers you will enter.')

# Get the numbers and accumulate them.
for counter in range(MAX):
    number = int(input('Enter a number: '))
    total = total + number

# Display the total of the numbers.
print(f'The total is {total}.')