is_prime

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Filename: is_prime.py
# Author: Jeoi Reqi

"""
Is Prime Script

This script checks whether a user-input number is a prime number or a negative prime.
Negative primes are prime numbers that are less than zero. They have the same properties as positive primes but with a negative sign. Examples include -2, -3, -5, 7... etc.
It utilizes a function, is_prime, to perform the prime number check.

Requirements:
- Python 3

Usage:
1. Run the script.
2. Enter a number when prompted.
3. The script will display whether the entered number is a prime number, a
   negative prime, or not prime.
"""

def is_prime(number):
    """Check if a number is a prime number.

    Args:
        number (int): Number.

    Returns:
        bool: True if number is a prime number, False otherwise.

    """
    if number < 2:
        return False
    for x in range(2, int(abs(number)**0.5) + 1):
        if abs(number) % x == 0:
            return False
    return True

def main():
    # Get user input
    user_input = int(input("Enter a number: "))

    # Check if it's a negative prime
    if is_prime(abs(user_input)):
        if user_input < 0:
            print(f"The number {user_input} is a Negative Prime.")
        else:
            print(f"The number {user_input} is Prime.")
    else:
        print(f"The number {user_input} is Not Prime.")

if __name__ == "__main__":
    main()