old_contents: """Card class.
  
  __author__ = "gemalto http://www.gemalto.com"
  
  Copyright 2001-2010 gemalto
  Author: Jean-Daniel Aussel, mailto:jean-daniel.aussel@gemalto.com
  
  This file is part of pyscard.
  
  pyscard is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.
  
  pyscard is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU Lesser General Public License for more details.
  
  You should have received a copy of the GNU Lesser General Public License
  along with pyscard; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  """
  from smartcard.Exceptions import CardConnectionException, NoCardException
  from smartcard.reader.Reader import Reader
  from smartcard.System import readers
  from smartcard.util import toHexString
  
  class Card:
      """Card class."""
      def __init__( self, reader, atr ):
          """Card constructor.
          reader: reader in which the card is inserted
          atr: ATR of the card"""
          self.reader=reader
          self.atr=atr
  
      def __repr__( self ):
          """Return a string representing the Card (atr and reader concatenation)."""
          return toHexString( self.atr ) + ' / ' + str(self.reader)
  
  
      def __eq__( self, other ):
          """Return True if self==other (same reader and same atr).
             Return False otherwise."""
          if isinstance( other, Card ):
              return (self.atr==other.atr and `self.reader`==`other.reader`)
          else:
              return False
  
      def __ne__( self, other ):
          """Return True if self!=other (same reader and same atr).Returns False otherwise."""
          return not self.__eq__( other )
  
  
      def createConnection( self ):
          """Return a CardConnection to the Card object."""
          readerobj=None
          if isinstance( self.reader, Reader ):
              readerobj=self.reader
          elif type(self.reader)==str:
              for reader in readers():
                  if self.reader==str(reader):
                      readerobj = reader
  
          if readerobj:
              return readerobj.createConnection()
          else:
              #raise CardConnectionException( 'not a valid reader: ' + str(self.reader) )
              return None
  
new_contents: """Card class.
  
  __author__ = "gemalto http://www.gemalto.com"
  
  Copyright 2001-2010 gemalto
  Author: Jean-Daniel Aussel, mailto:jean-daniel.aussel@gemalto.com
  
  This file is part of pyscard.
  
  pyscard is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.
  
  pyscard is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU Lesser General Public License for more details.
  
  You should have received a copy of the GNU Lesser General Public License
  along with pyscard; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  """
  from smartcard.Exceptions import CardConnectionException, NoCardException
  from smartcard.reader.Reader import Reader
  from smartcard.System import readers
  from smartcard.util import toHexString
  
  
  class Card:
      """Card class."""
  
      def __init__(self, reader, atr):
          """Card constructor.
          reader: reader in which the card is inserted
          atr: ATR of the card"""
          self.reader = reader
          self.atr = atr
  
      def __repr__(self):
          """Return a string representing the Card (atr and reader
          concatenation)."""
          return toHexString(self.atr) + ' / ' + str(self.reader)
  
      def __eq__(self, other):
          """Return True if self==other (same reader and same atr).
             Return False otherwise."""
          if isinstance(other, Card):
              return (self.atr == other.atr and `self.reader` == `other.reader`)
          else:
              return False
  
      def __ne__(self, other):
          """Return True if self!=other (same reader and same atr).Returns
          False otherwise."""
          return not self.__eq__(other)
  
      def createConnection(self):
          """Return a CardConnection to the Card object."""
          readerobj = None
          if isinstance(self.reader, Reader):
              readerobj = self.reader
          elif type(self.reader) == str:
              for reader in readers():
                  if self.reader == str(reader):
                      readerobj = reader
  
          if readerobj:
              return readerobj.createConnection()
          else:
              #raise CardConnectionException('not a valid reader: ' + str(self.reader))
              return None
  
subject: make pep8 happy