Added another test case

[cipher-training.git] / cipher.py

diff --git a/cipher.py b/cipher.py
index c5d542bb915b4cfd0775d5c100e8dce46a271d88..a09c3438a64728e32bdc625bff8af847f18d2df7 100644 (file)
--- a/cipher.py
+++ b/cipher.py
@@ -99,7 +99,7 @@ def deduplicate(text):
     return list(collections.OrderedDict.fromkeys(text))
 
 
-def caesar_encipher_letter(letter, shift):
+def caesar_encipher_letter(accented_letter, shift):
     """Encipher a letter, given a shift amount
 
     >>> caesar_encipher_letter('a', 1)
@@ -118,7 +118,12 @@ def caesar_encipher_letter(letter, shift):
     'y'
     >>> caesar_encipher_letter('a', -1)
     'z'
+    >>> caesar_encipher_letter('A', 1)
+    'B'
+    >>> caesar_encipher_letter('é', 1)
+    'f'
     """
+    letter = unaccent(accented_letter)
     if letter in string.ascii_letters:
         if letter in string.ascii_uppercase:
             alphabet_start = ord('A')
@@ -150,12 +155,14 @@ def caesar_encipher(message, shift):
     'cdezab'
     >>> caesar_encipher('ab cx yz', 2)
     'cd ez ab'
+    >>> caesar_encipher('Héllo World!', 2)
+    'Jgnnq Yqtnf!'
     """
     enciphered = [caesar_encipher_letter(l, shift) for l in message]
     return ''.join(enciphered)
 
 def caesar_decipher(message, shift):
-    """Encipher a message with the Caesar cipher of given shift
+    """Decipher a message with the Caesar cipher of given shift
     
     >>> caesar_decipher('bcd', 1)
     'abc'
@@ -163,10 +170,12 @@ def caesar_decipher(message, shift):
     'abc'
     >>> caesar_decipher('cd ez ab', 2)
     'ab cx yz'
+    >>> caesar_decipher('Jgnnq Yqtnf!', 2)
+    'Hello World!'
     """
     return caesar_encipher(message, -shift)
 
-def affine_encipher_letter(letter, multiplier=1, adder=0, one_based=True):
+def affine_encipher_letter(accented_letter, multiplier=1, adder=0, one_based=True):
     """Encipher a letter, given a multiplier and adder
     
     >>> ''.join([affine_encipher_letter(l, 3, 5, True) \
@@ -176,6 +185,7 @@ def affine_encipher_letter(letter, multiplier=1, adder=0, one_based=True):
             for l in string.ascii_uppercase])
     'FILORUXADGJMPSVYBEHKNQTWZC'
     """
+    letter = unaccent(accented_letter)
     if letter in string.ascii_letters:
         if letter in string.ascii_uppercase:
             alphabet_start = ord('A')
@@ -290,7 +300,7 @@ def keyword_encipher(message, keyword, wrap_alphabet=0):
     """
     cipher_alphabet = keyword_cipher_alphabet_of(keyword, wrap_alphabet)
     cipher_translation = ''.maketrans(string.ascii_lowercase, cipher_alphabet)
-    return message.lower().translate(cipher_translation)
+    return unaccent(message).lower().translate(cipher_translation)
 
 def keyword_decipher(message, keyword, wrap_alphabet=0):
     """Deciphers a message with a keyword substitution cipher.