Step 83
Two or more strings can be concatenated by using the + operator. For example: 'Hello' + ' there!' results in 'Hello there!.
Modify print(encryption) to print Encrypted text: mrttaqrhknsw ih puggrur. Use the + operator to concatenate text to your string and pay attention to the spacing.
I have changed the code, but the answer is still not correct. Please help me out with suggetions. Thank you.
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)
# User Editable Region
encryption = encrypt(text, custom_key)
print("Encrypted text: " + encryption)
decryption = decrypt(encryption, custom_key)
print(decryption)
# User Editable Region
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User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.0
Challenge Information:
Learn String Manipulation by Building a Cipher - Step 83