That {>>> (3219 + 99) // 100} doesnt work if the number is other then
4 digits.
(for rounding up to nearest 100):
>>> (3219 + 99)//100
33
>>> (3289 + 99)//100
33
>>> (328678 + 99)//100
3287
>>> (328 + 99)//100
4
On 10/02/2012 02:25, noydb wrote:
> That {>>> (3219 + 99) // 100} doesnt work if the number is other then
> 4 digits.
>
>
> (for rounding up to nearest 100):
>>>> (3219 + 99)//100
> 33
>>>> (3289 + 99)//100
> 33
>>>> (328678 + 99)//100
> 3287
>>>> (328 + 99)//100
> 4
>>> (3219 + 99) // 100 * 100
3300
>>> (3289 + 99) // 100 * 100
3300
>>> (328678 + 99) // 100 * 100
328700
>>> (328 + 99) // 100 * 100
400
Those are all rounded up to the nearest 100 correctly.
On Thu, Feb 9, 2012 at 8:36 PM, MRAB <python <at> mrabarnett.plus.com> wrote:
> On 10/02/2012 02:25, noydb wrote:
>>
>> That {>>> (3219 + 99) // 100} doesnt work if the number is other then
>> 4 digits.
>>
>>
>> (for rounding up to nearest 100):
>>>>>
>>>>> (3219 + 99)//100
>>
>> 33
>>>>>
>>>>> (3289 + 99)//100
>>
>> 33
>>>>>
>>>>> (328678 + 99)//100
>>
>> 3287
>>>>>
>>>>> (328 + 99)//100
>>
>> 4
>
>
>>>> (3219 + 99) // 100 * 100
> 3300
>>>> (3289 + 99) // 100 * 100
> 3300
(Continue reading)
On 10 February 2012 06:21, Ian Kelly <ian.g.kelly <at> gmail.com> wrote: >>>>> (3219 + 99) // 100 * 100 >> 3300 >>>>> (3289 + 99) // 100 * 100 >> 3300 >>>>> (328678 + 99) // 100 * 100 >> 328700 >>>>> (328 + 99) // 100 * 100 >> 400 >> >> Those are all rounded up to the nearest 100 correctly. > > One thing to be aware of though is that while the "round down" formula > works interchangeably for ints and floats, the "round up" formula does > not. > >>>> (3300.5 + 99) // 100 * 100 > 3300.0 > I'm surprised I haven't seen: >>> 212 - (212 % -100) 300 Here's a function that: * rounds up and down * works for both integers and floats * is only two operations (as opposed to 3 in the solutions given above)(Continue reading)
o.O Very nice On Fri, Feb 10, 2012 at 8:58 PM, Arnaud Delobelle <arnodel <at> gmail.com> wrote: > On 10 February 2012 06:21, Ian Kelly <ian.g.kelly <at> gmail.com> wrote: >>>>>> (3219 + 99) // 100 * 100 >>> 3300 >>>>>> (3289 + 99) // 100 * 100 >>> 3300 >>>>>> (328678 + 99) // 100 * 100 >>> 328700 >>>>>> (328 + 99) // 100 * 100 >>> 400 >>> >>> Those are all rounded up to the nearest 100 correctly. >> >> One thing to be aware of though is that while the "round down" formula >> works interchangeably for ints and floats, the "round up" formula does >> not. >> >>>>> (3300.5 + 99) // 100 * 100 >> 3300.0 >> > > I'm surprised I haven't seen: > >>>> 212 - (212 % -100) > 300 >(Continue reading)
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