Code club: My take on the crypto example from Python for Kids: http://jasonrbriggs.com/python-for-kids/puzzles/puzzle2.html and http://jasonrbriggs.com/python-for-kids/puzzles/puzzle2-solution.html

crypto.py

letters = 'abcdefghijklmnopqrstuvwxyz '
jumbled = 'jklmnopqrstuvwxyzabcdefghi '

# Long way
#decrypt_map = { }
#encrypt_map = { }
#for x in range(len(encrypted_letters)):
#    encrypted_letter = encrypted_letters[x]
#    unencrypted_letter = unencrypted_letters[x]
#    decrypt_map[unencrypted_letter] = encrypted_letter
#    encrypt_map[encrypted_letter] = unencrypted_letter

# Short way
decrypt_map = dict(zip(letters,jumbled))
encrypt_map = dict(zip(jumbled,letters))

# Short way
def decrypt(text):
    return ''.join([decrypt_map[a] for a in text])

# Long way
def encrypt(text):
    rtn = [ ]
    for l in text:
        rtn.append(encrypt_map[l])
    return ''.join(rtn)

print(decrypt('nyve r tcftb zj jkzcc ylexip zk xfvj srtb wfli jvtfeuj'))