input: from Crypto.Cipher import AES
  
  key = b'Sixteen byte key'
  
  def encrypt(plaintext):
      """Encrypt the given plaintext using AES encryption in ECB mode.
      >>> encrypt(b'Hello, World!')
      b'\\x9c\\xe1/\\xa4\\xd5\\x81\\x8e\\x9f\\x93\\xe8B\\x9e\\xd1\\xd8\\xf2\\x88'
      """
      cipher = AES.new(key, AES.MODE_ECB)
      return cipher.encrypt(plaintext)
  
  def decrypt(ciphertext):
      """Decrypt the given ciphertext using AES decryption in ECB mode.
      >>> decrypt(b'\\x9c\\xe1/\\xa4\\xd5\\x81\\x8e\\x9f\\x93\\xe8B\\x9e\\xd1\\xd8\\xf2\\x88')
      b'Hello, World!'
      """
      cipher = AES.new(key, AES.MODE_ECB)
      return cipher.decrypt(ciphertext)
output:     cipher = AES.new(key, AES.MODE_ECB)
      return cipher.decrypt(ciphertext)