round()  round its argument to the nearest integer

 
print round(x)

The found-function returns the nearest integer (e.g. 3.0 for an argument of 2.6). An argument with a fractional part of 0.5 (e.g. 2.5) represents an edge case, as such an argument has the same distance to two numbers, 3.0 and 2.0 in the example; this ambiguity is resolved by rounding away from zero and returning 3.0. By the same rule round(-2.5) returns -3.0; so you see, that round(x) always equals round(-x).

print round(2.3), round(2.5), round(2.7)
print round(2), round(-2)
print int(-2.3),round(-2.5), round(-2.7)

These examples return in order 2 3 3, then 2 -2 and finally 2 -3 -3.