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round(5.59, 1) is working fine. The problem is that 5.6 cannot be represented exactly in binary floating point. >>> 5.6 5.5999999999999996 >>> As Vinko says, you can use string formatting to do rounding for display. Python has a module for decimal arithmetic if you need that.
If you first take the absolute value of n using Python’s built-in abs() function, then you can just use round_half_up() to round the number. Then all you need to do is give the rounded number the same sign as n .
Rounding issues can occur when using the round() function in Python due to floating-point precision and the “round half to even” rule. To troubleshoot these issues, the decimal module provides a more precise and customizable solution.
15 sty 2024 · Built-in round() function. In Python, the built-in round() function is available. Built-in Functions - round() — Python 3.12.1 documentation; Specify the number to be rounded as the first argument and the number of decimal places to round to as the second argument, ndigits. Round decimals to a specific number of digits
To round a number in Python, you use the built-in round() function: round(number [, ndigits]) Code language: Python ( python ) The round() function rounds the number to the closest multiple of 10 -ndigits .
The round() function returns a floating-point number rounded to the specified number of decimals. In this tutorial, we will learn about Python round() in detail with the help of examples.
The round() function returns a floating point number that is a rounded version of the specified number, with the specified number of decimals. The default number of decimals is 0, meaning that the function will return the nearest integer.
