input: Write a function to check if a given number is prime. Return True if the number is prime, otherwise return False. If the number is less than or equal to 1, return False.
  def primeCheck(num):
      if num <= 1:
          return False
      for i in range(2, num):
          if (num % i) == 0:
              return False
      return True
  
  assert primeCheck(2)==True
  assert primeCheck(3)==True
  assert primeCheck(4)==False
  assert primeCheck(1)==False
  assert primeCheck(0)==False
  assert primeCheck(-1)==False
output: def primeCheck(num):
      if num <= 1:
          return False
      for i in range(2, int(num**0.5) + 1):
          if num % i == 0:
              return False
      return True