import codecs
import bz2

def encode(input, errors='strict'):
    assert errors == 'strict'
    output = bz2.compress(input)
    return (output, len(input))

def decode(input, errors='strict'):
    assert errors == 'strict'
    output = bz2.decompress(input)
    return (output, len(input))

### encodings module API

def getregentry():

    return (encode, decode, codecs.StreamReader, codecs.StreamWriter)

import codecs
import bz2 # this codec needs the optional bz2 module !

### 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.

    """
    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.

    """
    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)

Revert previous change. MAL preferred the old version.
Revert previous change.  MAL preferred the old version.

  import codecs
- import bz2
+ import bz2 # this codec needs the optional bz2 module !
  
+ ### Codec APIs
+ 
- def encode(input, errors='strict'):
+ 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.
+ 
+     """
      assert errors == 'strict'
      output = bz2.compress(input)
      return (output, len(input))
  
- def decode(input, errors='strict'):
+ 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.
+ 
+     """
      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 (encode, decode, codecs.StreamReader, codecs.StreamWriter)
+     return (bz2_encode,bz2_decode,StreamReader,StreamWriter)
  
Revert previous change. MAL preferred the old version.
## Code Before:
import codecs
import bz2

def encode(input, errors='strict'):
    assert errors == 'strict'
    output = bz2.compress(input)
    return (output, len(input))

def decode(input, errors='strict'):
    assert errors == 'strict'
    output = bz2.decompress(input)
    return (output, len(input))

### encodings module API

def getregentry():

    return (encode, decode, codecs.StreamReader, codecs.StreamWriter)

## Instruction:
Revert previous change. MAL preferred the old version.
## Code After:
import codecs
import bz2 # this codec needs the optional bz2 module !

### 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.

    """
    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.

    """
    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)
