If you want to change the actual value, use round as Eli suggested. However for many values and certain versions of Python this will not result be represented as the string "39.54". If you want to just round it to produce a string to display to the user, you can do
>>> print "%.2f" % (39.54484700000000)
39.54
or in newer versions of Python
>>> print("{:.2f}".format(39.54484700000000))
39.54
or with the fstrings
>>> print(f'{39.54484700000000:.2f}')
39.54
Relevant Documentation: String Formatting Operations, Built-in Functions: round
Answer from Jeremy on Stack OverflowIf you want to change the actual value, use round as Eli suggested. However for many values and certain versions of Python this will not result be represented as the string "39.54". If you want to just round it to produce a string to display to the user, you can do
>>> print "%.2f" % (39.54484700000000)
39.54
or in newer versions of Python
>>> print("{:.2f}".format(39.54484700000000))
39.54
or with the fstrings
>>> print(f'{39.54484700000000:.2f}')
39.54
Relevant Documentation: String Formatting Operations, Built-in Functions: round
Use round:
Return the floating point value x rounded to n digits after the decimal point. If n is omitted, it defaults to zero. The result is a floating point number. Values are rounded to the closest multiple of 10 to the power minus n; if two multiples are equally close, rounding is done away from 0
>>> round(39.544847, 2)
39.539999999999999
>>>
Note that since 39.54 isn't exactly represantable with floating points on my PC (x86), the result is an epsilon off. But that makes no difference (and is a whole different issue with many SO questions and answers on it). If you convert it to a string properly, you'll see what you expect:
>>> "%.2f" % round(39.544847, 2)
'39.54'
Pythonic way to show 2 decimal places in f-strings?
Do the second one, just don’t worry about rounding it. Let the formatting do the rounding for display.
More on reddit.comSimple print {:.2f}.format(feet) python
what does "%.2f" mean?
Confused by .2f in python
I've got a number that needs to be rounded to 2 decimal places. Getting the round is easy, but if the number is a whole number or only has 1 digit beyond the decimal the rounding doesn't properly show 2 decimal places.
answer = 1 print(round(float(answer),2)) >> 1.0
I really like f-strings, so I would use this:
answer = 1
print(f"{round(float(answer),2):.2f}")
>> 1.00
Is there a neater or more readable method of doing this?
Do the second one, just don’t worry about rounding it. Let the formatting do the rounding for display.
Also, formatting to round things is one instance where I sometimes prefer the .format() method to fstrings, as you can define the formatting once and use it again and again:
>>> FORMAT_2DP = "{:.2f}"
>>> numbers = 1, 3, 4, 5
>>> for number in numbers:
... print(FORMAT_2DP.format(number))
...
1.00
3.00
4.00
5.00As a beginner ,I just want to know the meaning of the code below
"%.2f"
print("%.2f" % total)
Hi all. I've recently started learning python using an online free course. The current exercise wants the student to write a function that will round a list of floating point numbers to the second decimal point, as well as keep the list in its original order. The examples used :.2f to do the rounding, but I cannot seem to get this to work.
My code:
def formatted(list):
nlist = []
for i in list:
nlist.append(i:.2f)
return nlistMy current error in Visual Studio Code is: "(" was not closed Pylance [Ln4, Col 21]
Any help in understanding this error will be appreciated. Thanks so much!