python math round to nearest integer

title: python math: round to nearest integer - a comprehensive tutorial
introduction:
rounding numbers is a common task in programming, and python provides a built-in function, round(), to simplify this process. this tutorial will guide you through the usage of the round() function to round numbers to the nearest integer in various scenarios.
the round() function in python is designed to round a floating-point number to the nearest integer. it takes two arguments - the number to be rounded and an optional second argument representing the number of decimal places to round to. if the second argument is omitted, the function rounds to the nearest integer.
let's start with the most basic usage of the round() function:
in this example, number_to_round is rounded to the nearest integer using round(), and the result is printed. the output will be:
you can also round a number to a specific decimal place by providing the second argument to the round() function:
the output will be:
the round() function handles negative numbers as expected. it rounds towards positive infinity for positive numbers and towards negative infinity for negative numbers:
the output will be:
when a number is exactly halfway between two possible rounded values, round() rounds to the nearest even number. this is known as "round half to even" or "bankers' rounding." for example:
the output will be:

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