Learn String Manipulation by Building a Cipher - Step 76

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Stuck

Your code so far

text = 'Hello Zaira'
custom_key = 'python'


# User Editable Region

def vigenere(message, key, direction=value):

# User Editable Region

    key_index = 0
    alphabet = 'abcdefghijklmnopqrstuvwxyz'
    final_message = ''

    for char in message.lower():
    
        # Append space to the message
        if char == ' ':
            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)

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Challenge Information:

Learn String Manipulation by Building a Cipher - Step 76

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Modify the vigenere function so that its direction parameter has a default value of 1.

direction=value

Your syntax is correct but what is “value”? That variable does not exist.

https://www.w3schools.com/python/gloss_python_function_default_parameter.asp