Round integers to the nearest 10

Question

I am trying to round integers in python. I looked at the built-in round() function but it seems that that rounds floats.

My goal is to round integers to the closest

Answer 1

About the round(..) function returning a float

That float (double-precision in Python) is always a perfect representation of an integer, as long as it's in the range [-2⁵³..2⁵³]. (Pedants pay attention: it's not two's complement in doubles, so the range is symmetric about zero.)

See the discussion here for details.