X-Git-Url: https://git.njae.me.uk/?a=blobdiff_plain;f=szyfrow%2Fpolybius.py;h=d037ec9c0b212d03784fe64744f0c42eeb08c64a;hb=748b5cceaa346d3097c58229ea04ead0c7e3f48e;hp=b3ffeaba91e9fb722a9b9004abc481692887a1f3;hpb=f19a021eabb3222709b9d513839a14c01cfdfd38;p=szyfrow.git

diff --git a/szyfrow/polybius.py b/szyfrow/polybius.py
index b3ffeab..d037ec9 100644
--- a/szyfrow/polybius.py
+++ b/szyfrow/polybius.py
@@ -1,3 +1,7 @@
+"""Simple digraph substitution cipher, using the 
+[Polybius square](https://en.wikipedia.org/wiki/Polybius_square). Enciphering
+and deciphering, and a couple of ways to break these ciphers.
+"""
 import multiprocessing 
 from szyfrow.support.utilities import *
 from szyfrow.support.language_models import *
@@ -60,7 +64,6 @@ def polybius_encipher(message, keyword, column_order, row_order,
     """Encipher a message with Polybius cipher, using a keyword to rearrange
     the alphabet
 
-
     >>> polybius_encipher('this is a test message for the ' \
           'polybius decipherment', 'elephant', \
           [1, 2, 3, 4, 5], [1, 2, 3, 4, 5], \