round

Rounds a number.

Synopsis

round(number)
round(number, digits)

Description

Without digits, round returns the nearest whole number. With digits, it keeps that many places after the decimal point.

An exact half rounds to the nearest even number: round(2.5) is 2, but round(3.5) is 4.

Parameters

Return value

An int without digits, a float with it.

Example

print(round(3.7))
print(round(3.14159, 2))
print(round(2.5))
print(round(3.5))

It prints:

4
3.14
2
4

Common mistake

print(round(2.675, 2))

It prints:

2.67

You might expect 2.68. The float stored for 2.675 is a little less than 2.675, so it rounds down. To show money, format it instead: f"{x:.2f}".

See also

int, math.floor, math.ceil, f-strings

round in the Python documentation