Learn String Manipulation by Building a Cipher - Step 70

Tell us what’s happening:

encryption = vigenere(text, custom_key , direction)

print(encryption)

just curious of what im doing incorrectly as i am to turn the last 2 lines of code into comments which by example i have done and additionally adding a 3rd parameter which i have also done.

Your code so far


# User Editable Region

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]
    
    return encrypted_text
    
# encryption = vigenere(text, custom_key , direction)
# print(encryption)

# User Editable Region

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Challenge Information:

Learn String Manipulation by Building a Cipher - Step 70

Function definition starts with the keyword def (to define a function)

Here you are defining a function and it’s parameters:

def vigenere(message, key):

Here you are calling a function and passing it arguments:

encryption = vigenere(text, custom_key , direction)

I got it now thank you :blue_heart: . I previously was not focusing enough on the fact that it said definition.

1 Like

Getting used to the difference between parameters and arguments is good too because they are kind of similar.