Check if this basic Python script is coded right

[rusi]

On Saturday, October 26, 2013 11:50:33 PM UTC+5:30, MRAB wrote:
> On 26/10/2013 18:36, HC wrote:
> > I'm doing my first year in university and I need help with this basic assignment.
> >
> > Assignment: Write Python script that prints sum of cubes of numbers between 0-200 that are multiples of 3. 3^3+6^3+9^3+12^3....+198^3=?
<code snipped>
> >
> > Is it all okay?
> >
> Just one small point: the assignment says that the numbers should be in
> the range 0-200, but the loop's condition is count<200 it's excluding
> 200, so the numbers will actually be in the range 0-199.
> 
> However, as 200 isn't a multiple of 3, it won't affect the result, but
> in another assignment it might.
> 
> (For the record, this is known as an "off-by-one" error.)

So is an off-by-one error that did not happen an off-by-an-off-by-one error?