curriculum/challenges/english/blocks/learn-string-manipulation-by-building-a-cipher/65a450e8fb2c9d75c7378d28.md
Since this time you are starting from an encrypted string to decrypt, you won't need the encryption variable anymore.
Delete encryption and the print(encryption) call. Also, comment out the last two lines of your code.
You should delete the encryption variable and its value.
const commentless_code = __helpers.python.removeComments(code);
assert.isFalse(/encryption\s*=\s*encrypt\s*\(\s*text\s*,\s*custom_key\s*\)/.test(commentless_code))
You should not have print(encryption) in your code.
const commentless_code = __helpers.python.removeComments(code);
assert.isFalse(/print\s*\(\s*encryption\s*\)/.test(commentless_code))
You should turn decryption = decrypt(encryption, custom_key) into a comment.
assert(code.match(/#\s*decryption\s*=/));
You should turn print(decryption) into a comment.
assert(code.match(/#\s*print\s*\(\s*decryption\s*\)/));
Your code contains invalid syntax and/or invalid indentation.
({test: () => assert(true) })
text = 'mrttaqrhknsw ih puggrur'
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
def encrypt(message, key):
return vigenere(message, key)
def decrypt(message, key):
return vigenere(message, key, -1)
--fcc-editable-region--
encryption = encrypt(text, custom_key)
print(encryption)
decryption = decrypt(encryption, custom_key)
print(decryption)
--fcc-editable-region--