Check if a number is Prime using loops and conditionals in Python

by ganesh Updated: Dec 5, 2022

Guide Kit

Python is a popular and powerful programming language with capabilities to build software applications. In this solution kit, I am sharing the code snippet and library that I use to create a function to check if a number is prime which can be executed directly in the Jupyter Notebook or any IDE of choice.

Fig 1: Preview of the output that you will get on running this code from your IDE

Code

In this solution, we will create a function to check if a number is prime.

For loop_python

PythonLines of Code : 9License : Strong Copyleft (CC BY-SA 4.0)

Dependent Libraries :

def check_primes(num):
    is_prime = True
    for y in range(3,num):
        if num % y==0:
            return 'Non PRIME'
        else:
            continue
    return 'PRIME'

Copy the code using the "Copy" button above, and paste it in an IDE.
Run the code and call the created function to check if the number is prime.

I hope you found this useful. I have added the link to dependent libraries, version information in the following sections.

I found this code snippet by searching for "for loop in python" in kandi. You can try any such use case!

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

The solution is created in Python3.7

Using this solution, we are able to create a function to check a number is prime in Python with simple steps. This process also facilities an easy to use, hassle free method to create a hands-on working version of code which would help us check if a number is prime.

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Check if a number is Prime using loops and conditionals in Python

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