"%.2f" does not return a clean float. It returns a string representing this float with two decimals.
my_list = [0.30000000000000004, 0.5, 0.20000000000000001]
my_formatted_list = [ '%.2f' % elem for elem in my_list ]
returns:
['0.30', '0.50', '0.20']
Also, don't call your variable list. This is a reserved word for list creation. Use some other name, for example my_list.
If you want to obtain [0.30, 0.5, 0.20] (or at least the floats that are the closest possible), you can try this:
my_rounded_list = [ round(elem, 2) for elem in my_list ]
returns:
[0.29999999999999999, 0.5, 0.20000000000000001]
W3Schools
w3schools.com › python › ref_func_round.asp
Python round() Function
Python Examples Python Compiler ... Python Training ... The round() function returns a floating point number that is a rounded version of the specified number, with the specified number of decimals....
Top answer 1 of 9
132
"%.2f" does not return a clean float. It returns a string representing this float with two decimals.
my_list = [0.30000000000000004, 0.5, 0.20000000000000001]
my_formatted_list = [ '%.2f' % elem for elem in my_list ]
returns:
['0.30', '0.50', '0.20']
Also, don't call your variable list. This is a reserved word for list creation. Use some other name, for example my_list.
If you want to obtain [0.30, 0.5, 0.20] (or at least the floats that are the closest possible), you can try this:
my_rounded_list = [ round(elem, 2) for elem in my_list ]
returns:
[0.29999999999999999, 0.5, 0.20000000000000001]
2 of 9
70
If you really want an iterator-free solution, you can use numpy and its array round function.
import numpy as np
myList = list(np.around(np.array(myList),2))
# OR
myList = np.around(myList,2).tolist()
how to limit or round a float to only two decimals without rounding up
You can try the solution here: https://stackoverflow.com/a/62435913 More on reddit.com
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January 26, 2024rounding - How to round to 2 decimals with Python? - Stack Overflow
If anyone does not place the f after .2, a number like 14.426599999999999 will round to 1.4e+01. As far as Python 3.8.6 2021-06-28T21:35:14.95Z+00:00 ... @martin36, this is not an incorrect result, since 39.555 cannot be represented exactly in floating-point format, so Python will actually ... More on stackoverflow.com
Floating point numbers to two decimal places - possible with standard lib?
I’m trying to get 2 decimal places of 0s (e.g, 9.00) in the budget app project. I tried using string formatting, but the program expects a floating point number, not a string. Casting it to a float results in a single .0 because that’s how floating point numbers work in Python - that gets ... More on forum.freecodecamp.org
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0
August 24, 2022How to round a whole number to 2 decimal places
https://docs.python.org/3/tutorial/inputoutput.html Depending on what formatting style you prefer, it’s going to look something like: number = 56 print(f”{number:.2f}”) More on reddit.com
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May 24, 2021Videos
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Sololearn
sololearn.com › en › Discuss › 3288381 › how-to-round-to-2-decimal-places-in-python
How to round to 2 decimal places in python | Sololearn: Learn to code for FREE!
Yes, you can use the round() function in Python to round a float to a specific number of decimal places. In your case, you can use round(number, 2) to round the number to 2 decimal places.
Reddit
reddit.com › r/learnpython › how to limit or round a float to only two decimals without rounding up
r/learnpython on Reddit: how to limit or round a float to only two decimals without rounding up
January 26, 2024 -
Hello,
Does anyone know how to limit or round a float to only two decimals without rounding up?
for example,
if the number is 3.149, then I want the output to be 3.14. If the number is 3.0, then the output must be 3.00
thank you
GeeksforGeeks
geeksforgeeks.org › python › how-to-round-floating-value-to-two-decimals-in-python
How to Round Floating Value to Two Decimals in Python - GeeksforGeeks
July 23, 2025 - In Python, we can use the decimal module to round floating-point numbers to a specific number of decimal places with higher precision and control compared to the built-in floating-point arithmetic.
Codecademy
codecademy.com › article › rounding-to-two-decimal-places-in-pythonn
Rounding to Two Decimal Places in Python | Codecademy
In Python, we can use the built-in round function to round floating-point numbers to a specified number of decimal places. One of the features of Python’s round() function is its implementation of “round half to even,” also known as ...
Mimo
mimo.org › glossary › python › round-function
Mimo: The coding platform you need to learn Web Development, Python, and more.
... from decimal import Decimal, ROUND_HALF_UP # Create Decimal objects instead of using floats num = Decimal('2.675') # Use the quantize() method to round to two decimal places with rounding mode ROUND_HALF_UP rounded_num = num.quantize(Decimal('0.01'), rounding=ROUND_HALF_UP) print(rounded_num) ...
Python
docs.python.org › 3 › library › decimal.html
decimal — Decimal fixed-point and floating-point arithmetic
A: The quantize() method rounds to a fixed number of decimal places. If the Inexact trap is set, it is also useful for validation: >>> TWOPLACES = Decimal(10) ** -2 # same as Decimal('0.01')
DataCamp
datacamp.com › tutorial › python-round-to-two-decimal-places
How to Round to 2 Decimal Places in Python | DataCamp
August 8, 2024 - You will also find the Python Cheat Sheet for Beginners useful as a quick reference if you need a refresher on Python syntax and functions. The simplest method to round a number to two decimal places in Python is by using the built-in round() function, which is pretty straightforward.
Top answer 1 of 16
1119
You can use the round function, which takes as its first argument the number and the second argument is the precision after the decimal point.
In your case, it would be:
answer = str(round(answer, 2))
2 of 16
222
Using str.format()'s syntax to display answer with two decimal places (without altering the underlying value of answer):
def printC(answer):
print("\nYour Celsius value is {:0.2f}ºC.\n".format(answer))
Where:
:introduces the format spec0enables sign-aware zero-padding for numeric types.2sets the precision to2fdisplays the number as a fixed-point number
Real Python
realpython.com › python-rounding
How to Round Numbers in Python – Real Python
December 7, 2024 - Python’s built-in round() function ... To round numbers to specific decimal places, you can use the round() function with a second argument specifying the number of decimals....
TutorialsPoint
tutorialspoint.com › how-to-round-down-to-2-decimals-a-float-using-python
How to round down to 2 decimals a float using Python?
August 29, 2023 - Pass input number, 2 (decimal value) as arguments to the round() function to round the input number upto the 2 decimal places. Print the rounded value of the input floating-point number upto 2 decimals.
Python Shiksha
python.shiksha › home › tips › 3 python ways to limit float up to two decimal places
3 Python ways to Limit float up to two decimal places - Python Shiksha
July 18, 2021 - Actually , the round() function takes in two arguments, first one is the number to be rounded and the second is the number of places to be rounded off to. But if no second argument is passed then the function considers it to be zero and rounds ...
freeCodeCamp
forum.freecodecamp.org › python
Floating point numbers to two decimal places - possible with standard lib? - Python - The freeCodeCamp Forum
August 24, 2022 - I’m trying to get 2 decimal places of 0s (e.g, 9.00) in the budget app project. I tried using string formatting, but the program expects a floating point number, not a string. Casting it to a float results in a single .0 because that’s how floating point numbers work in Python - that gets ...
Spark By {Examples}
sparkbyexamples.com › home › python › python limit floats to two decimal points
Python Limit Floats to Two Decimal Points - Spark By {Examples}
May 31, 2024 - To limit a float to two decimal points use the Python round() function, you simply need to pass the float as the first argument and the value 2 as the second argument.
AskPython
askpython.com › home › how to format a number to 2 decimal places in python?
How to Format a Number to 2 Decimal Places in Python? - AskPython
February 27, 2023 - Like before when we only used %f for the full float value to be showcased, but here we are adding “%.1f” for the 1 digit to appear after the decimal and “%.2f” for the 2 digits to appear after the decimal.
PythonHow
pythonhow.com › how › limit-floats-to-two-decimal-points
Here is how to limit floats to two decimal points in Python
In this case, the float x is rounded to two decimal points, resulting in the value 3.14.Alternatively, you can use the format function to format a float as a string with a fixed number of decimal points. Here is an example of how to use format to limit a float to two decimal points: x = 3.14159265 # Format x as a string with two decimal points y = "{:.2f}".format(x) print(y) # Output: "3.14"The format function takes a format string as the first argument and the value to format as the second argument.
Finxter
blog.finxter.com › 5-best-ways-to-round-float-to-2-decimals-in-python
5 Best Ways to Round Float to 2 Decimals in Python – Be on the Right Side of Change
In the code above, the placeholder {:.2f} within the string defines the format, indicating that the float should be formatted with two decimal places. The format method then replaces the placeholder with the rounded number. The Decimal module in Python provides arithmetic with as much precision as needed.
Pandas
pandas.pydata.org › docs › reference › api › pandas.DataFrame.round.html
pandas.DataFrame.round — pandas 3.0.1 documentation
A DataFrame with the affected columns rounded to the specified number of decimal places. ... Round a numpy array to the given number of decimals. ... Round a Series to the given number of decimals. ... For values exactly halfway between rounded decimal values, pandas rounds to the nearest even value (e.g. -0.5 and 0.5 round to 0.0, 1.5 and 2.5 round to 2.0, etc.).
Studytonight
studytonight.com › python-howtos › how-to-round-floating-value-to-two-decimals-in-python
How to Round Floating Value to Two Decimals in Python - Studytonight
January 21, 2021 - We can also use % instead of format() function to get formatted output. It is similar to the format specifier in the print function of the C language. Just use the formatting with %.2f which gives you round down to 2 decimal points.