Loop that adds user inputted numbers and breaks when user types “end”

Question

Create a function that expects no arguments. The function asks user to enter a series of numbers greater than or equal to zero, one at a time. The user types end to indicate tha

Answer 1

Split up the loop into more discrete steps:

def SumFunction():
    """Sum of all values entered"""
    number = 0
    user_input = 1
    while user_input >= 0:
        user_input = input("Enter next number: ")
        if user_input == 'end':
            break
        user_input = float(user_input)
        number += max(user_input, 0)
    return number

This first gets user input and checks if it's 'end'. If it is, the program breaks out of the loop and returns the running total, number. If it isn't, the program converts the user input to a number and adds it to number. If the number is 0 or negative, the program will add nothing to number, and the loop will stop. Finally, the resulting number is returned.