input: Write a function to determine if a number provided by the user is prime or not. If the number is prime return True else return False.
  def is_prime(num):
   is_prime = True
  
   for i in range(2, num):
   if num % i == 0:
   is_prime = False
   break
  
   return is_prime
  
  assert is_prime(17)==True
  assert is_prime(4)==False
  assert is_prime(2)==True
  assert is_prime(1)==False
  assert is_prime(-5)==False
output: def is_prime(num):
      if num <= 1:
          return False
      for i in range(2, int(num**0.5) + 1):
          if num % i == 0:
              return False
      return True