Tell us what’s happening:
In scientific computing with python(beta)'s first project learn string manipulation by building a cipher’s step 86 is asking to modify the encryption and decryption’s value that i’ve already did but still it’s giving me error.
encryption = encrypt(text, custom_key)
print(encryption)
decryption = decrypt(encryption, custom_key, -1)
print(decryption)
Your code so far
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
