Learn String Manipulation by Building a Cipher - Step 86

Python
1

hello there yes i do not what i did wrong?
Your encryption variable should have the value of encrypt(text, custom_key) .

def encrypt(message, key):
return vigenere(message, key)

def decrypt(message, key):
return vigenere(message, key, -1)

encryption = encrypt(text, custom_key)
print(encryption)
decryption = decrypt(encryption, custom_key, -1)
print(decryption)

text = 'Hello Zaira!'
custom_key = 'python'

def vigenere(message, key, direction=1):
    key_index = 0
    alphabet = 'abcdefghijklmnopqrstuvwxyz'
    final_message = ''

    for char in message.lower():

        # Append any non-letter character to the message
        if not char.isalpha():
            final_message += char
        else:        
            # Find the right key character to encode/decode
            key_char = key[key_index % len(key)]
            key_index += 1

            # Define the offset and the encrypted/decrypted letter
            offset = alphabet.index(key_char)
            index = alphabet.find(char)
            new_index = (index + offset*direction) % len(alphabet)
            final_message += alphabet[new_index]
    
    return final_message

# User Editable Region

def encrypt(message, key):
    return vigenere(message, key)
    
def decrypt(message, key):
    return vigenere(message, key, -1)
    
encryption = encrypt(text, custom_key)
print(encryption)
decryption = decrypt(encryption, custom_key, -1)
print(decryption)

# User Editable Region

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Challenge Information:

Learn String Manipulation by Building a Cipher - Step 86

2

You need to solve this error that appear in the terminal

Traceback (most recent call last):
  File "main.py", line 37, in <module>
TypeError: decrypt() takes 2 positional arguments but 3 were given
3

thanks for your respond.
could you be more clear how can i fix this?
because I have tried several thing without success.
thanks

4

Have a look at your decrypt function - how many arguments does it take?

5

def encrypt(message, key):
return vigenere(message, key)

def decrypt(message, key):
return vigenere(message, key, -1)

encryption = encrypt(text, custom_key)
print(encryption)
decryption = decrypt (encryption, custom_key, -1)
print(decryption)

6

Can you answer my earlier question in your own words please.

7

what does the error say? it is saying “decrypt() takes 2 positional arguments but 3 were given”, what could that mean?