Python Floating and Integer Numbers

Question

I want check a type of a number in python, for example

x=4
y=2
type(x/y) == type(int)
--> False

it has to be True but what python makes is, it takes 4/2 as 2.0.

2.0 is a floating number, how can I make 2.0 to 2 but at the same time I don't want to make 2.5 to 2 for example :

x=5
y=2
type(x/y) == type(int)
--> False

This is what I want. In conclusion I need something that can understand if a number is int or a floating number after a division operation. Can you help me please

I think you want what is explained in this answer: stackoverflow.com/questions/4541155/… — Hunter McMillen
– Hunter McMillen, Commented Mar 6, 2017 at 19:58
What's preventing you from writing a function that does just that? — timgeb
– timgeb, Commented Mar 6, 2017 at 19:58
but your problem here is that type(int) returns <type 'type'> not <type 'int'> — Hunter McMillen
– Hunter McMillen, Commented Mar 6, 2017 at 19:59
Having the result's type depend on the value is usually a bad idea. If you want to perform a divisibility test, there's a much better way to do that: x % y == 0 if x is divisible by y. — user2357112
– user2357112, Commented Mar 6, 2017 at 20:10

Patrick Haugh · Accepted Answer · 2017-03-06 19:59:06Z

1

The output of / is going to be a float. You can define your own function that wraps /

import math
def my_div(a, b):
    x = a/b
    if math.floor(x) == x:
        return int(x)
    return x

answered Mar 6, 2017 at 19:59

Patrick Haugh

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2 Comments

TemporalWolf Over a year ago

return a//b if a//b == a/b else a/b is equivalent

Patrick Haugh Over a year ago

@TemporalWolf and probably unreadable for someone who doesn't grok the difference between a float and an int

Jean-François Fabre · Accepted Answer · 2017-03-06 19:59:22Z

1

In python 3, x/y will always be of type float, so forget about type

If you only have int numbers as input you could just use modulo:

x%y == 0

yields True if the result is integer, False otherwise

answered Mar 6, 2017 at 19:59

Jean-François Fabre♦

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