old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  class Handler(object):
      def __init__(self, db):
          # Each handlers is formatted following
          # the pattern : [ command,
          #                 default return value,
          #                 raised error ]
          self.handles = {
              'GET': (db.Get, "", KeyError),
              'PUT': (db.Put, "True", TypeError),
              'DELETE': (db.Delete, ""),
              }
  
  
      def command(self, message):
          op_code = message.op_code
          args = message.data
  
          if op_code in self.handles:
              if len(self.handles[op_code]) == 2:
                  return self.handles[op_code](*args)
              else:
                  # FIXME
                  # global except catching is a total
                  # performance killer. Should enhance
                  # the handles attributes to link possible
                  # exceptions with leveldb methods.
                  try:
                      value = self.handles[op_code][0](*args)
                  except self.handles[op_code][2]:
                      return ""
          else:
              raise KeyError("op_code not handle")
  
          return value if value else self.handles[op_code][1]
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  class Handler(object):
      def __init__(self, db):
          # Each handlers is formatted following
          # the pattern : [ command,
          #                 default return value,
          #                 raised error ]
          self.handles = {
              'GET': (db.Get, "", KeyError),
              'PUT': (db.Put, "True", TypeError),
              'DELETE': (db.Delete, ""),
              }
  
  
      def command(self, message):
          op_code = message.op_code
          args = message.data
  
          if op_code in self.handles:
              if len(self.handles[op_code]) == 2:
                  value = self.handles[op_code][0](*args)
              else:
                  # FIXME
                  # global except catching is a total
                  # performance killer. Should enhance
                  # the handles attributes to link possible
                  # exceptions with leveldb methods.
                  try:
                      value = self.handles[op_code][0](*args)
                  except self.handles[op_code][2]:
                      return ""
          else:
              raise KeyError("op_code not handle")
  
          return value if value else self.handles[op_code][1]
  
subject: Fix : delete command call badly formatted in handler