Python Veify if a number is an integer [duplicate]

Question

This is something that I have not been able to resolve.

The issue is that I am looking for an integer as an output.

I have written some sample code, which is:

tempVal1 = 4+5 print ("The value is of tempval1 integer: ", tempVal1, "\n and it is an integer ",isinstance(tempVal1, int)) tempVal2 = math.sqrt(36) print ("The value is of tempval2 integer: ", tempVal2, "\n and it is an integer ", isinstance(tempVal2, int))

The output is

from what I can see, the ouput of the square root is coming as a float.

I have looked at operator.index(tempVal2) and it sets everything as integer values.

The output that i am looking is to checkj if the number is an integer or not.

Can anyone advise me what steps to take?

If it was C# for example, I would try something like

if(int.TryParse(inputString, out val))

Does this answer your question? How to check if a float value is a whole number — user23234689
– user23234689, Commented Apr 12, 2024 at 14:24
Hi Elerium, thanks that has resolved it, could you put it in a post and I will give you credit for it — user3569147
– user3569147, Commented Apr 12, 2024 at 14:32
@user3569147 you can give credit to the answer in the linked question if it solved your problem. — user23234689
– user23234689, Commented Apr 12, 2024 at 15:19

AKX · Accepted Answer · 2024-04-12 14:32:17Z

2

From Python 3.12 forward, you can use the aptly named .is_integer() method on both floats and ints.

On earlier versions, that method only existed on floats.

answered Apr 12, 2024 at 14:32

AKX

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1 Comment

JonSG Over a year ago

Since it only existed on floats prior to 3.12, you might also do float(n).is_integer()

user22971923 · Accepted Answer · 2024-04-12 14:29:20Z

So, you write a function called is_whole_number which checks if the modulo of the value is zero.

def is_whole_number(num): return isinstance(num, (int, float)) and num % 1 == 0 print(is_whole_number(5.0)) print(is_whole_number(5.5))

Hope this helps.

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