X-Git-Url: https://wannabe.guru.org/gitweb/?a=blobdiff_plain;f=letter_compress.py;h=9b4cf194c3d97a83c68c47bd0199a65c3a6e1698;hb=36fea7f15ed17150691b5b3ead75450e575229ef;hp=d5a4d60ef06483ee07bd2761e10a5ee9bba7385e;hpb=d82c8377ce394cad812dc0d53829f7465b3f3f4e;p=python_utils.git

diff --git a/letter_compress.py b/letter_compress.py
index d5a4d60..9b4cf19 100644
--- a/letter_compress.py
+++ b/letter_compress.py
@@ -2,9 +2,9 @@
 
 import bitstring
 
-from collect.bidict import bidict
+from collect.bidict import BiDict
 
-special_characters = bidict(
+special_characters = BiDict(
     {
         ' ': 27,
         '.': 28,
@@ -34,10 +34,12 @@ def compress(uncompressed: str) -> bytes:
     compressed = bitstring.BitArray()
     for (n, letter) in enumerate(uncompressed):
         if 'a' <= letter <= 'z':
-            bits = ord(letter) - ord('a') + 1   # 1..26
+            bits = ord(letter) - ord('a') + 1  # 1..26
         else:
             if letter not in special_characters:
-                raise Exception(f'"{uncompressed}" contains uncompressable char="{letter}"')
+                raise Exception(
+                    f'"{uncompressed}" contains uncompressable char="{letter}"'
+                )
             bits = special_characters[letter]
         compressed.append(f"uint:5={bits}")
     while len(compressed) % 8 != 0:
@@ -70,12 +72,12 @@ def decompress(kompressed: bytes) -> str:
     # complete the partial 4th byte.  In the 4th byte, however, one
     # bit is information and seven are padding.
     #
-    # It's likely that this APIs client code will treat a zero byte as
-    # a termination character and not regard it as part of the
-    # message.  This is a bug in the client code.
+    # It's likely that this API's client code may treat a zero byte as
+    # a termination character and not regard it as a legitimate part
+    # of the message.  This is a bug in that client code, to be clear.
     #
     # However, it's a bug we can work around:
-
+    #
     # Here, I'm appending an extra 0x00 byte to the compressed message
     # passed in.  If the client code dropped the last 0x00 byte (and,
     # with it, some of the legitimate message bits) by treating it as
@@ -100,4 +102,5 @@ def decompress(kompressed: bytes) -> str:
 
 if __name__ == '__main__':
     import doctest
+
     doctest.testmod()