def primecheck(num): 
if num > 1:  for i in range(2, num): if (num % i) == 0: return False breakelse: return True

Im trying to make a function that checks if an input is prime or not. This code does return True if I enter a prime number, but it also enters true whenever I enter a multiple of a prime number? Why is this happening

thanks

The problem with your code is that you have return statements in the first iteration of the loop. Also break statement is not needed. Moving return True outside the loop gives the solution:

def primecheck(num):for i in range(2, num):if num % i == 0:return Falsereturn True

I leave num = 0 or 1 for you.