error when trying to separate a integer from a decimal

Question

I'm trying to create a module that will separate the decimal from a number as I need it for a project. However when I test it the integer comes out fine but the decimal always gets an error:


def seperate(decimal):
    integer = int(decimal)
    dec = decimal-integer
    print(dec, integer)

if I say try to enter 2015.677 it give this: 0.6769999999999072 2015

what is wrong?

Please share the error message. When I ran it in Python 3 it doesn’t product an error and returns result as expected. — Mrinal Roy, Jul 19 '20 at 17:36
``` seperate(4.5) 0.5 4 ``` I get it fine. what is the error — Karthik Radhakrishnan, Jul 19 '20 at 17:36
float and its not an actual error its just an innacurate calculation and I don't get why — David Safro, Jul 19 '20 at 17:38

score 2 · Accepted Answer · answered Jul 19 '20 at 17:38

Actually what i suggest is that you can try this alternative approach, And for this to work properly we always need to pass a floating value to it, and it also works for your conditions

def seperate(decimal):
    integer = int(decimal)
    decimal = str(decimal)
    dec = decimal[decimal.index('.')+1:]
    return(int(dec), integer)

score -2 · Answer 2 · answered Jul 19 '20 at 17:37

what's the error you are getting?

I tried your code, and it worked just fine on Python 3.7

decimal = 3.5
integer = int(decimal)
dec = decimal-integer
print(dec, integer)

If you give us the error, perhaps I can help you a little bit more.

Regards!

Edit:

After reading the update on the rounding problem, i used the "round" function and returned the 0.677 part of your decimal just fine.

error when trying to separate a integer from a decimal

2 Answers2