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The sum of ten numbers inserted from the user

Ian Clark <ianhclark510 at gmail.com> writes:

> This is my whack at it, I can't wait to hear about it being the wrong big o
> notation!
> numbers=[]
> while len(numbers) < 10:
>     try:
>         chip = int(input('please enter an integer: '))
>     except ValueError:
>         print('that is not a number, try again')
>     else:
>         numbers.append(chip)
> print(sum(numbers))

Why would you not keep a running total, rather than list of the numbers?
I've not been following assiduously, so maybe I missed some other