round decimal numbers in Python

Question

How can I render decimal numbers in Python? For example, in the number 3.14373873 only up to and including the number 4.

I want to round the decimal numbers from a specific place:

As example:

3.14373873 -> 3.14

See: https://stackoverflow.com/questions/20457038/how-to-round-to-2-decimals-with-python?noredirect=1&lq=1 — slothrop, Jul 17 '23 at 12:40
Does this answer your question? [Limiting floats to two decimal points](https://stackoverflow.com/questions/455612/limiting-floats-to-two-decimal-points) — bfontaine, Jul 17 '23 at 12:48

score 2 · Accepted Answer · edited Jul 19 '23 at 18:13

2

you can use the round() function:

https://www.w3schools.com/python/ref_func_round.asp

Example:

p = round(50.12345,3)
print(p)

Output:

 50.123

Example 2:

# for integers
print(round(15))

# for floating point
print(round(51.6))
print(round(51.5))
print(round(51.4))

Output:

edited Jul 19 '23 at 18:13

UpAndAdam

4,515
3
28
46

answered Jul 17 '23 at 12:41

PrometheusKain

36
3

you should explain what round is doing and not just link to a third party site to have a better answer – UpAndAdam Jul 19 '23 at 18:14

score 1 · Answer 2 · answered Jul 17 '23 at 12:41

1

You can do this:

print(round(3.14373873, 4))

answered Jul 17 '23 at 12:41

kleinohad

5,800
2
26
34

score 1 · Answer 3 · answered Jul 17 '23 at 13:10

you can use the round() function:-

Example :

x = round(1.54321, 2)

print(x)

You can mention the value after the how many digits you have to store on your program
Your output will be 1.54 because of the mention of 2 digits...
If you have mentioned 3 digits then the output will be 1.543 like that

score 0 · Answer 4 · answered Jul 17 '23 at 12:43

The round function from the standard python library can be used to round floats to the desired number of digits after decimal point -:

round(decimal_num, num_of_digits_to_round_to)

To round 3.14373873 to just 3.14, you can do the following -:

round(3.14373873, 2)

Refer to official python wiki for more info -:

round(number, ndigits=None)

Return number rounded to ndigits precision after the decimal point. If ndigits is omitted or is None, it returns the nearest integer to its input.

round decimal numbers in Python

4 Answers4