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Python supports object-oriented programming and has concise, readable, and easy-to-learn syntax. It is no wonder that it is one of the most popular programming languages. An integral part of Python are its built-in functions.
We've written a series of articles to help you learn and brush up on the most useful Python functions. In this article, we’ll learn about the round() function in Python and how to use it.
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In this article, we’ll cover:
The round function in Python rounds a number to a specific decimal place and returns a floating-point number rounded as per our specifications. It takes the following arguments:
The number of decimal places is set to zero by default. So the round() function returns the nearest integer to the number passed if the number is the only argument passed.
Here, we take a look at how you can use the Python function round() next time you need it:
Note that in the case of 0.5, the round() function rounds the number off to the nearest even number.
Found this article helpful? You can learn about more Python functions in our learn folder.
Q1. What does round() in Python return?
The round function in Python takes any number as an argument and returns a floating-point number rounded as per our optionally provided specifications. If no specifications are provided, it rounds to zero decimal places, giving us the nearest integer.
Q2. How do you round a float in Python 3?
You round off a float number to your desired decimal place using the built-in function round() in Python.
Q3. How do you round a number num to three decimal places in Python?
The syntax for that would look like this: round(num, 3)
Q4. In Python, the round() function rounds up or down?
The round() function can round the values up and down both depending on the situation. For <0.5, it rounds down, and for >0.5, it rounds up. For =0.5, the round() function rounds the number off to the nearest even number. So, 0.5 is rounded to zero, and so is -0.5; 33.5 and 34.5 are both rounded off to 34; -33.5 -34.5 are both rounded off to -34, and so on.
Q5. By default, round() in Python rounds to how many decimal places?
By default, if not mentioned, the round() method rounds the given number to zero decimal places.
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