old_contents: # -*- coding: utf-8 -*-
  
  import os
  import logging
  from babel.messages.mofile import write_mo
  from babel.messages.pofile import read_po
  import zc.buildout
  
  class CompileMo(object):
      def __init__(self, buildout, name, options):
          self.name = name
          basedir = buildout['buildout']['directory']
          self.podir = os.path.join(basedir, options.get('po-directory'))
  
      def install(self):
          generated = []
          for dirpath, _, filenames in os.walk(self.podir):
              for filename in filenames:
                  domain, ext = os.path.splitext(filename)
                  if ext == '.po':
                      po = open(os.path.join(dirpath, filename))
                      mo = file(os.path.join(dirpath, domain + '.mo'), 'wb')
                      logging.getLogger(self.name).info(
                          "compiling catalog '%s' to '%s'"%(po.name, mo.name))
                      write_mo(mo, read_po(po))
                      generated.append(mo.name)
                      mo.close()
  
          return generated
  
      update = install
  
new_contents: # -*- coding: utf-8 -*-
  
  import os
  import logging
  from babel.messages.mofile import write_mo
  from babel.messages.pofile import read_po
  
  class CompileMo(object):
      def __init__(self, buildout, name, options):
          self.name = name
          basedir = buildout['buildout']['directory']
          self.podir = os.path.join(basedir, options.get('po-directory'))
  
      def install(self):
          generated = []
          for dirpath, _, filenames in os.walk(self.podir):
              for filename in filenames:
                  domain, ext = os.path.splitext(filename)
                  if ext == '.po':
                      po = open(os.path.join(dirpath, filename))
                      mo = open(os.path.join(dirpath, domain + '.mo'), 'wb')
                      logging.getLogger(self.name).info(
                          "compiling catalog '%s' to '%s'"%(po.name, mo.name))
                      write_mo(mo, read_po(po))
                      generated.append(mo.name)
                      mo.close()
  
          return generated
  
      update = install
  
subject: remove unused import, coding style