Learn String Manipulation by Building a Cipher - Step 71

Python
1

Tell us what’s happening:

Describe your issue in detail here.
I have updated the second and third comments to reflect the additional parameters being encode/decoded and encrypted/decrypted. This feels as if there is a minute change I need to make somewhere, but I am not sure as I already updated the second comment

Your code so far


/* User Editable Region */

text = 'Hello Zaira'
custom_key = 'python'

def vigenere(message, key, direction):
    key_index = 0
    alphabet = 'abcdefghijklmnopqrstuvwxyz'
    final_message = ''

    for char in message.lower():
    
        #Append space to the message
            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
    
encryption = vigenere(text, custom_key, 1)
print(encryption)
decryption = vigenere(encryption, custom_key, -1)
print(decryption)

/* User Editable Region */

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Challenge Information:

Learn String Manipulation by Building a Cipher - Step 71

2

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.

3

Copy your ELSE clock and Reset the lesson. Your comments are good but you’re missing the IF statement.

4

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