input: 
  def primeCheck(num):
   """
   Check if a given number is a prime number.
   >>> primeCheck(5)
   True
   >>> primeCheck(10)
   False
   >>> primeCheck(1)
   False
   """
   if num > 1:
    for i in range(2, num):
     if (num % i) == 0:
      return False
   else:
    return False
   return True
  
output:     if num > 1:
          for i in range(2, int(num**0.5) + 1):
              if (num % i) == 0:
                  return False
      else:
          return False
      return True