Created a new file ascii6.py that follows similar style to ascii7.py encode(text), decode(text) register_codec and uses Bits. the docstrict also includes compression rate with is about .72 or 72%.

text_codecs/alphanumeric.py

@@ -1,7 +1,8 @@
 import string
 import codecs
-from custom_codecs.register import register_codec
+#from text_codecs.register import register_codec
 from easybits import Bits
+from register import register_codec
 
 allowed_characters = string.ascii_letters + string.digits