Learn String Manipulation by Building a Cipher - Step 65

Python
1

Tell us what’s happening:

Hey guys, i’m kinda stuck here, because my code is not passing, and i dont know why.
Thank you in advance for the help

Your code so far

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
#commenting so i can remember this is decryption
encryption = vigenere(text, custom_key)
print(encryption)

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### Challenge Information:
Learn String Manipulation by Building a Cipher - Step 14
https://www.freecodecamp.org/learn/scientific-computing-with-python/learn-string-manipulation-by-building-a-cipher/step-14
2

Just adding the link to the step:
https://www.freecodecamp.org/learn/scientific-computing-with-python/learn-string-manipulation-by-building-a-cipher/step-65

3

comment out the last two lines

You need to complete this part of the instructions

4

Hey pkdvalis, i really am struggling and probably it’s as simple as i think, but i commented the last two lines with one single “#comment”. Tried to comment each line, and still not accepting my code:

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

#comment to know we have a future decryption code
encryption = vigenere(text, custom_key)
print(encryption)

5

Comment out means you need to turn the last two lines into comments.
You need to write an # at the beginning of each line.

1 Like
6

thanks alot man! been here trying to figure it, and afterall was simple

7

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