Python Modulus Operator

Like other programming languages, the Python modulus operator does the same work to find the modulus of the given number. The operator is a mathematical symbol used to perform different operations such as (+, -, * /) addition, subtraction, multiplication, and division on the given two numbers to return the result in the form of an integer as well as the float number. An operator tells the compiler to perform certain actions based on the passed operator symbol to the given number.

Modulus Operator

Python Modulus Operator is an inbuilt operator that returns the remaining numbers by dividing the first number from the second. It is also known as the Python modulo. In Python, the modulus symbol is represented as the percentage (%) symbol. Hence, it is called the remainder operator.

Syntax

Following are the syntax to get the remainder by dividing the first number from the second.

Here X and Y are two integer numbers, and the modulus (%) is used in between to get the remainder where the first number (X) is divided by the second number (Y).

For example, we have two numbers, 24 and 5. And we can get the remainder by using the modulus or modulo operator between the numbers 24 % 5. Here 24 is divided by 5 that returns 4 as the remainder, and 4 as the quotient. When the first number is completely divisible by another number without leaving any remainder, the result will be 0.

Get the modulus of two integers numbers using while loop

Let’s write a program to get the remainder of two numbers using the while loop and modulus (%) operator in Python.

Get_rem.py

Output:

Do you want to continue or not (Y / N)? Y
First number is: 37
Second number is: 5
37 % 5 = 2
5 % 37 = 5

Do you want to continue or not (Y / N)? Y
First number is: 37
Second number is: 5
24 % 5 = 4
5 % 24 = 5

Do you want to continue or not (Y / N)? Y
First number is: 37
Second number is: 5
28 % 5 = 3
5 % 28 = 5

Get the modulus of two float numbers

Let’s write a program to find the remainder of two integer number using the modulus operator in Python.

Mod.py

Output:

First number: 40.5
 Second number: 20.5
Modulus of two float number is:  40.5 % 20.5 = 20.0

Get the modulus of a negative number

Let’s write a program to get the remainder of two negative number using while loop and modulus (%) operator in Python.

Mod.py

Output:

First number: -10
Second number: 3
Modulus of negative number is:  -10 % 3  =  2
Modulus of negative number is:  3 % -10  =  -7
 Do you want to continue (Y / N)? N

Get the modulus of two numbers using fmod() function

Let’s write a program to get the remainder of two float number using fmod() function in Python.

Fmod.py

Output:

Modulus using fmod() is: 3.5
 Modulus using fmod() is: 13.5
First number is 24
Second number is 5
Modulus of two numbers using fmod() function is 24  %  5  =  4.0

Get the modulus of n numbers using function

Let’s write a Python program to find the modulus of n number using function and for loop.

getRemainder.py

Output:

Define a number till that you want to display the remainder 7
 Enter the second number 5
1 % 5 = 1
2 % 5 = 2
3 % 5 = 3
4 % 5 = 4
5 % 5 = 0
6 % 5 = 1
7 % 5 = 2

Get the modulus of given array using mod() function

Let’s write a program to demonstrate the mod() function in Python.

Mod_fun.py

Output:

The modulus of the given array is [0 3 4 3]

As we can see in the above program, x and y variables hold the arrays. After that, we use the mod() function to pass x and y as the array parameter that divides the first array(x) by the second array(y) and then returns the remainder of the numbers.

Get the modulus of two numbers using numpy.

Let’s consider a program to import a numpy package from the Python library and then use the remainder function to get the modulus in Python.

Num.py

Output:

Modulus is 38 % 8 = 6

Exceptions in Python Modulus operator

In Python, when a number is divided by zero, it throws an exception, and the exception is called the ZeroDivisionError. In other words, it returns an exception when a number is divisible by a divisor that is zero. Therefore, if we want to remove the exception from the Python modulus operator, the divisor should not be zero.

Let’s write a program to demonstrate the Python Exception in Modulus operator.

Except.py

Output:

The first number is: 24
The second number is: 0
Cannot divide a number by zero! So, change the value of the right operand.

As we can see in the above result, it displays, “Cannot divide a number by zero! So, change the value of the right operand“. Hence, we can say, when we divide the first number by zero, it returns an exception.