Learn String Manipulation by Building a Cipher - Step 67

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i got it . i wrote the correct code but i am not getting the consept like how is it possible :frowning:

Your code so far

text = 'Hello Zaira'
custom_key = 'python'

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

    for char in message.lower():
        # Append space to the message
        if char == ' ':
            encrypted_text += char
            # Find the right key character to encode
            key_char = key[key_index % len(key)]
            key_index += 1

            # Define the offset and the encrypted letter
            offset = alphabet.index(key_char)
            index = alphabet.find(char)
            new_index = (index + offset) % len(alphabet)
            encrypted_text += alphabet[new_index]
    return encrypted_text

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Learn String Manipulation by Building a Cipher - Step 67

Hello @quit913,

In this you have to create a variable called encryption.
Then you have to create a function called vigenere.
And pass text and custom_key as argument.

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To call a function and store the result in a variable, use this syntax:

variable = function(argument1, argument2)
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