Learn String Manipulation by Building a Cipher - Step 55

I created the key index var and set it to 0 but its not working

Your code so far


# User Editable Region

text = 'Hello Zaira'
custom_key = 'python'
key_index = '0'
def vigenere(message, key):
    alphabet = 'abcdefghijklmnopqrstuvwxyz'
    encrypted_text = ''

    for char in message.lower():
        if char == ' ':
            encrypted_text += char
        else:
            index = alphabet.find(char)
            new_index = (index + offset) % len(alphabet)
            encrypted_text += alphabet[new_index]
    print('plain text:', message)
    print('encrypted text:', encrypted_text)

# User Editable Region

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Challenge Information:

Learn String Manipulation by Building a Cipher - Step 55

it should be put inside function before variable alphabet. also make it an integer variable. no need of ''