curriculum/challenges/english/blocks/learn-string-manipulation-by-building-a-cipher/65552a111190e11f0963949e.md
Delete the pass keyword, and return vigenere(message, key) from your new function.
Your encrypt function should return vigenere(message, key). Remember to delete pass.
({ test: () => {
const commentless_code = __helpers.python.removeComments(code);
const {function_body} = __helpers.python.getDef(commentless_code, "encrypt");
assert(function_body.match(/return\s+vigenere\s*\(\s*message\s*,\s*key\s*\)/));
assert.notMatch(function_body, /pass/);
}
})
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
--fcc-editable-region--
def encrypt(message, key):
pass
encryption = vigenere(text, custom_key)
print(encryption)
decryption = vigenere(encryption, custom_key, -1)
print(decryption)
--fcc-editable-region--