Bug Detector | Python

Prime Number Check Loop Fix

Explanation and corrected code for fixing the loop range bug in the is_prime function to correctly check for prime numbers. The code now ranges up to the square root of n for accurate prime checks.

Prompt

def is_prime(n):
    if n <= 1:
        return False
    for i in range(2, int(n**0.5) + 1):
        if n % i == 0:
            return False
    return True

Answer

Code Inspection:

Bug:

The bug in the code is the loop range in the for loop of the is_prime function.

Explanation:

The loop should range from 2 to the square root of n rounded up to the nearest integer, inclusive. However, the current implementation ranges up to int(n**0.5) + 1, which is incorrect.

Fix:

Update the range of the for loop to range(2, int(n**0.5) + 2) to include the square root of n for the correct prime number check.

Corrected Code:

def is_prime(n):
    if n <= 1:
        return False
    for i in range(2, int(n**0.5) + 2):
        if n % i == 0:
            return False
    return True

Description

Explanation and corrected code for fixing the loop range bug in the is_prime function to correctly check for prime numbers. The code now ranges up to the square root of n for accurate prime checks.