Learn String Manipulation by Building a Cipher - Step 91

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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 */

print(f'\nEncrypted text: {text}')
print(f'Key: {custom_key}')
decryption = decrypt(text, custom_key)
print(f'Decrypted text: {decryption}')

/* User Editable Region */

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Challenge Information:

Learn String Manipulation by Building a Cipher - Step 90

You appear to have created this post without editing the template. Please edit your post to Tell us what’s happening in your own words.

Hello zainrizvi, welcome to the forum!

It looks like you added one new line character in your first print. But the question wants you to add two to your last print call, one at the beginning and one at the end of the last print call.

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