AES crypto python pycrypt

from Crypto.Cipher import AES

passphrase = '123123123123123'
aes = AES.new(passphrase, AES.MODE_CFB)
plaintext = 'Hello Bob. Please save me!'
ciphertext = aes.encrypt(plaintext)
print ciphertext

aes = AES.new(passphrase, AES.MODE_CFB)
print aes.decrypt(ciphertext)