Simplifed the code.

Lib/encodings/bz2_codec.py

@@ -8,57 +8,20 @@
 
 """
 import codecs
-import bz2 # this codec needs the optional bz2 module !
+import bz2
 
-### Codec APIs
-
-def bz2_encode(input,errors='strict'):
-
-    """ Encodes the object input and returns a tuple (output
-        object, length consumed).
-
-        errors defines the error handling to apply. It defaults to
-        'strict' handling which is the only currently supported
-        error handling for this codec.
-
-    """
+def encode(input, errors='strict'):
     assert errors == 'strict'
     output = bz2.compress(input)
     return (output, len(input))
 
-def bz2_decode(input,errors='strict'):
-
-    """ Decodes the object input and returns a tuple (output
-        object, length consumed).
-
-        input must be an object which provides the bf_getreadbuf
-        buffer slot. Python strings, buffer objects and memory
-        mapped files are examples of objects providing this slot.
-
-        errors defines the error handling to apply. It defaults to
-        'strict' handling which is the only currently supported
-        error handling for this codec.
-
-    """
+def decode(input, errors='strict'):
     assert errors == 'strict'
     output = bz2.decompress(input)
     return (output, len(input))
 
-class Codec(codecs.Codec):
-
-    def encode(self, input, errors='strict'):
-        return bz2_encode(input, errors)
-    def decode(self, input, errors='strict'):
-        return bz2_decode(input, errors)
-
-class StreamWriter(Codec,codecs.StreamWriter):
-    pass
-
-class StreamReader(Codec,codecs.StreamReader):
-    pass
-
 ### encodings module API
 
 def getregentry():
 
-    return (bz2_encode,bz2_decode,StreamReader,StreamWriter)
+    return (encode, decode, codecs.StreamReader, codecs.StreamWriter)