How to round number to 3 decimals max?

Question

I am trying to round up 5.9999998 to 5.999.

But I have a problem, If I do round(number) it'll round it up to 6. How can I round a number like this to max 3 decimals?

Answer 1

You can use this:

number = 5.999999998
new_number = int(number * 1e3) / 1e3