# [Tutor] Rounding up/down integer numbers!

**Gregor Lingl
**
glingl@aon.at

*Fri Aug 1 05:01:05 2003*

Wilhelmsen Jan schrieb:
>* Hi!
*>*
*>*
*>*
*>* I have the need to round up some numbers to the nearest 100. (01-49
*>* down and 50-99 round up)
*>*
*>*
*>*
*>* How do you do this most efficiently?
*>*
*>*
*>*
*Python has a function round, which returns numbers of type double:
>>> print round(1123.456789, 4)
1123.4568
>>> print round(1123.456789, 2)
1123.46
>>> print round(1123.456789, 0)
1123.0
This function has a wonderful magic property:
>>> print round(1123.456789, -1)
1120.0
>>> print round(1123.456789, -2)
1100.0
If you need an integer as a result use int to convert type:
>>> print int(round(1123.456789, -2))
1100
>>> print int(round(8359980, -2))
8360000
HTH, Gregor
>* Ex:
*>*
*>*
*>*
*>* 8356440
*>*
*>* Should be rounded down to:
*>*
*>* 8356400
*>*
*>* and:
*>*
*>* 8356499
*>*
*>* should be rounded up to:
*>*
*>* 8356500
*>*
*>*
*>*
*>* So far I managed but what if:
*>*
*>*
*>*
*>* 8359980
*>*
*>* Then the number should be rounded up to:
*>*
*>* 8360000
*>*
*>*
*>*
*>* Can anyone give me a clue to this?
*>*
*>*
*>*
*>* I think maybe I have to set up a range with split 100 and use a while
*>* syntax
*>*
*>*
*>*
*>* But I'm pretty new to programming so I'm not sure how to do this
*>*
*>*
*>*
*>*
*>*
*>* Thanks
*>*
*>*
*>*
*>* Regards
*>*
*>*
*>*
*>* Jan Wilhelmsen
*>*
*>* IT-Technician
*>*
*>* Bilia Personbil as
*>*
*>*
*>*
*>*
*>*
*>* -------------------------------------------------------------------------------
*>* This verifies that this e-mail has been scanned for virus and deemed
*>* virus-free
*>* according to F-secure Content Scanner 5.0
*>* Fri, 1 Aug 2003 10:23:39 +0200 GMT
*>* -------------------------------------------------------------------------------
*