by Sai gowtham

Checking if a number is divisible by another number in Python

In this tutorial, we are going to learn about how to check if a number is divisible by another number in Python with the help of examples.

Consider, we have a following number:

a = 10

To find if a above number 10 is divisible by another number, we should divide the first number by second and get the remainder 0 then only we call it’s a divisible of another number otherwise it is not a divisible.

For example: 10%5 = 0

Using % Modulo operator

To check if a number is divisible by another number, we can use the % modulo operator in Python.

The modulo % operator returns the remainder of two numbers 100 % 10 = 0, so if we get a remainder 0 then the given number is a divisible of another number otherwise it not a divisible.

Here is an example:


if 10 % 5 == 0 :
   print("10 is divisible by 5")
else:
   print("10 is not divisible by 5")

Output:

"10 is divisible by 5"

In the above code we have added 10 % 5 == 0 in if condition, so 10 is divided by 5 and returns the remainder 0 then it prints the output “10 is divisible by 5”.

Example 2 :

if 20 % 4 == 0 :
   print("20 is divisible by 4")
else:
   print("20 is not divisible by 4")

Output:

"20 is divisible by 4"

Checking if a number is not divisible by another

To check if a number is not a divisible of another number, we can use the modulo operator % but the remainder of first number by second number is not equal to 0.

Here is an example:

if (23 % 10 != 0):
    print ("23 is not divisible by 10")

In the above code, 23 is divided by 10 and returns the remainder 3. So the given number is not divisible of 10.

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