Learn String Manipulation by Building a Cipher - Step 63

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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
        else:        
            # 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]

    encryption = return encrypted_text
return encrypted_text
return vigenere(text,custom_key)
    
    

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Learn String Manipulation by Building a Cipher - Step 63

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Hi, welcome to the forum!
We see you have posted some code but did you have a question?

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Here is a reference for calling a function in Python:

https://www.freecodecamp.org/news/how-to-call-a-function-in-python-def-syntax-example/#howtocallafunctioninpython

The instruction in the step 63 is clearly given.

Call your function passing text and custom_key as the arguments. Store the return value of the function call in a variable called encryption .

first u need to create a variable encryption and assign the function vigenere. Pass arguments text and custom_key inside () brackets.