Learn String Manipulation by Building a Cipher - Step 69

Python
1

Tell us what’s happening:

Step 69: Encryption and decryption are opposite processes and your function can do both with a couple of tweaks.

Add a third parameter called direction to your function definition. Also, comment out the last two lines to avoid errors in the console.
Describe your issue in detail here.

Your code so far


# User Editable Region

text = 'Hello Zaira'
custom_key = 'python'

def vigenere(message, key, direction):
    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)
print(encryption)

# User Editable Region

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Challenge Information:

Learn String Manipulation by Building a Cipher - Step 69

2

You appear to have created this post without editing the template. Please edit your post to Tell us what’s happening in your own words.

3

Also, comment out the last two lines to avoid errors in the console.

Did you do that?

4

Ahh, thanks for this reminder !

6

I can´t find my error:

return encrypted_text

´# encryption = vigenere(text, custom_key, direction)
´# print(encryption)

7

Please open a new topic for your question

If you have a question about a specific challenge as it relates to your written code for that challenge and need some help, click the Ask for Help button located on the challenge (it looks like a question mark). This button only appears if you have tried to submit an answer at least three times.

The Ask for Help button will create a new topic with all code you have written and include a link to the challenge also. You will still be able to ask any questions in the post before submitting it to the forum.

Thank you.

9

If you have a question about a specific challenge as it relates to your written code for that challenge and need some help, click the Ask for Help button located on the challenge (it looks like a question mark). This button only appears if you have tried to submit an answer at least three times.

The Ask for Help button will create a new topic with all code you have written and include a link to the challenge also. You will still be able to ask any questions in the post before submitting it to the forum.

Thank you.