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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.
Python’s Built-in round() Function. Python has a built-in round() function that takes two numeric arguments, n and ndigits, and returns the number n rounded to ndigits. The ndigits argument defaults to zero, so leaving it out results in a number rounded to an integer. As you’ll see, round() may not work quite as you expect.
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.
The round() function rounds the number to the closest multiple of 10 -ndigits. In other words, the round() function returns the number rounded to ndigits precision after the decimal point. If ndigits is omitted or None, the round() will return the nearest integer.
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.
11 mar 2021 · Rounding to a specific decimal place. What if you wanted to round a number to a specific number of decimal places? Thankfully, round() has got you covered. Here’s how you would do it: rounded_value = round(5.678, 2) print(rounded_value) # Outputs: 5.68.
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.
