Tell us what’s happening:
Describe your issue in detail here.
not quite sure what im doing wrong as they are asking to combine the key and custom key parts of the code, any help will be very helpful thanks
Your code so far
text = 'mrttaqrhknsw ih puggrur'
custom_key = 'python'
def vigenere(message, key, direction=1):
key_index = 0
alphabet = 'abcdefghijklmnopqrstuvwxyz'
final_message = ''
for char in message.lower():
# Append any non-letter character to the message
if not char.isalpha():
final_message += char
else:
# Find the right key character to encode/decode
key_char = key[key_index % len(key)]
key_index += 1
# Define the offset and the encrypted/decrypted letter
offset = alphabet.index(key_char)
index = alphabet.find(char)
new_index = (index + offset*direction) % len(alphabet)
final_message += alphabet[new_index]
return final_message
def encrypt(message, key):
return vigenere(message, key)
def decrypt(message, key):
return vigenere(message, key, -1)
# User Editable Region
encryption = encrypt(text, custom_key)
print('Encrypted text: ' + text)
print(key: + custom_key)
print("key: " + custom_key)
decryption = decrypt(encryption, custom_key)
print(decryption)
# User Editable Region
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Challenge Information:
Learn String Manipulation by Building a Cipher - Step 89