Python : round up an integer to the next tens or hundreds

Question

I want to round up integer to its next tens or hundreds. e.g. 12 -> 20 or 560 ->600. How can I do it?

Answer 1

You can use the round() function to round an integer to its nearest tens, hundreds, thousands, etc.

E.g.

>>> round(150,-2)
200
>>> round(15,-1)
20
>>> round(12,-1)
10

But if you want to round to the next tens/hundreds, you can write a one-liner pythonic code.

E.g.

>>> n=12
>>> round(n,-1)+10 if round(n,-1)<n else round(n,-1)
20
>>> n=16
>>> round(n,-1)+10 if round(n,-1)<n else round(n,-1)
20
>>> n=156
>>> round(n,-2)+100 if round(n,-2)<n else round(n,-2)
200
>>> n=550
>>> round(n,-2)+100 if round(n,-2)<n else round(n,-2)
600