input: 
  def primeCheck(num):
   """ Analyze a given Python code and write a function that checks if a given number is prime.
   >>> primeCheck(2)
   True
   >>> primeCheck(3)
   True
   >>> primeCheck(4)
   False
   >>> primeCheck(1)
   False
   >>> primeCheck(0)
   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:
          return False
      if num == 2:
          return True
      if num % 2 == 0:
          return False
      for i in range(3, int(num**0.5) + 1, 2):
          if num % i == 0:
              return False
      return True