old_contents: """smartcard.guid
  
  Utility functions to handle GUIDs as strings or list of bytes
  
  __author__ = "http://www.gemalto.com"
  
  Copyright 2001-2012 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 __future__ import print_function
  from struct import unpack
  
  # guid is ulong+ushort+ushort+uchar[8]; we need a map because bytes
  # are swappted for the first three
  map = {0: 3, 1: 2, 2: 1, 3: 0, 4: 5, 5: 4, 6: 7, 7: 6, 8: 8, 9: 9,
      10: 10, 11: 11, 12: 12, 13: 13, 14: 14, 15: 15}
  
  
  def  strToGUID(s):
      """Converts a GUID string into a list of bytes.
  
      >>> strToGUID('{AD4F1667-EA75-4124-84D4-641B3B197C65}')
      [103, 22, 79, 173, 117, 234, 36, 65, 132, 212, 100, 27, 59, 25, 124, 101]
      """
      l = []
      for i in unpack('x' + '2s' * 4 + 'x' + '2s2sx' * 3 + '2s' * 6 + 'x', s):
          l += [int(i, 16)]
      zr = []
      for i in range(len(l)):
          zr.append(l[map[i]])
      return zr
  
  
  def GUIDToStr(g):
      """Converts a GUID sequence of bytes into a string.
  
      >>> GUIDToStr([103,22,79,173,  117,234,  36,65,
      ...            132, 212, 100, 27, 59, 25, 124, 101])
      '{AD4F1667-EA75-4124-84D4-641B3B197C65}'
      """
      zr = []
      for i in range(len(g)):
          zr.append(g[map[i]])
      return "{%2X%2X%2X%2X-%2X%2X-%2X%2X-%2X%2X-%2X%2X%2X%2X%2X%2X}" % tuple(zr)
  
  if __name__ == "__main__":
      """Small sample illustrating the use of guid.py."""
      import smartcard.guid
      dummycardguid1 = strToGUID('{AD4F1667-EA75-4124-84D4-641B3B197C65}')
      print(dummycardguid1)
      print(GUIDToStr(dummycardguid1))
  
  
new_contents: """smartcard.guid
  
  Utility functions to handle GUIDs as strings or list of bytes
  
  __author__ = "http://www.gemalto.com"
  
  Copyright 2001-2012 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 __future__ import print_function
  import uuid
  
  # guid is ulong+ushort+ushort+uchar[8]
  
  
  def strToGUID(s):
      """Converts a GUID string into a list of bytes.
  
      >>> strToGUID('{AD4F1667-EA75-4124-84D4-641B3B197C65}')
      [103, 22, 79, 173, 117, 234, 36, 65, 132, 212, 100, 27, 59, 25, 124, 101]
      """
      dat = uuid.UUID(hex=s)
      if isinstance(dat.bytes_le, str):
          # Python 2
          dat = [ord(e) for e in dat.bytes_le]
      else:
          # Python 3
          dat = list(dat.bytes_le)
      return dat
  
  
  def GUIDToStr(g):
      """Converts a GUID sequence of bytes into a string.
  
      >>> GUIDToStr([103,22,79,173,  117,234,  36,65,
      ...            132, 212, 100, 27, 59, 25, 124, 101])
      '{AD4F1667-EA75-4124-84D4-641B3B197C65}'
      """
      try:
          dat = uuid.UUID(bytes_le=bytes(g))
      except:
          dat = uuid.UUID(bytes_le=''.join(map(chr, g)))
      return '{' + str(dat).upper() + '}'
  
  
  if __name__ == "__main__":
      """Small sample illustrating the use of guid.py."""
      guid_in = '{AD4F1667-EA75-4124-84D4-641B3B197C65}'
      print(guid_in)
      dummycardguid1 = strToGUID(guid_in)
      print(dummycardguid1)
      guid_out = GUIDToStr(dummycardguid1)
      print(guid_out)
      if guid_in != guid_out:
          print("Failure")
      else:
          print("Success")
  
subject: use uuid module