text: ENTRY_POINT = 'prime_length'
  #[PROMPT]
  
  def prime_length(string):
      """Write a function that takes a string and returns True if the string
      length is a prime number or False otherwise
      Examples
      prime_length('Hello') == True
      prime_length('abcdcba') == True
      prime_length('kittens') == True
      prime_length('orange') == False
      """
  #[SOLUTION]
      l = len(string)
      if l == 0 or l == 1:
          return False
      for i in range(2, l):
          if l % i == 0:
              return False
      return True
  #[CHECK]
  def check(candidate):
  
      # Check some simple cases
      assert candidate('Hello') == True
      assert candidate('abcdcba') == True
      assert candidate('kittens') == True
      assert candidate('orange') == False
      assert candidate('wow') == True
      assert candidate('world') == True
      assert candidate('MadaM') == True
      assert candidate('Wow') == True
      assert candidate('') == False
      assert candidate('HI') == True
      assert candidate('go') == True
      assert candidate('gogo') == False
      assert candidate('aaaaaaaaaaaaaaa') == False
  
      # Check some edge cases that are easy to work out by hand.
      assert candidate('Madam') == True
      assert candidate('M') == False
      assert candidate('0') == False
  
  