old_contents: from rpyc.core.stream import SocketStream, PipeStream
  from rpyc.core.channel import Channel
  from rpyc.core.protocol import Connection
  from rpyc.core.netref import BaseNetref
  from rpyc.core.async import AsyncResult, AsyncResultTimeout
  from rpyc.core.service import Service, VoidService, SlaveService
  from rpyc.core.vinegar import GenericException, install_rpyc_excepthook
  
  # for .NET
  import platform
  if platform.system() == "cli":
      import clr
      # Add Reference to IronPython zlib (required for channel compression) 
      # grab it from http://bitbucket.org/jdhardy/ironpythonzlib
      clr.AddReference("IronPython.Zlib") 
  
  install_rpyc_excepthook()
  
  
new_contents: from rpyc.core.stream import SocketStream, PipeStream
  from rpyc.core.channel import Channel
  from rpyc.core.protocol import Connection
  from rpyc.core.netref import BaseNetref
  from rpyc.core.async import AsyncResult, AsyncResultTimeout
  from rpyc.core.service import Service, VoidService, SlaveService
  from rpyc.core.vinegar import GenericException, install_rpyc_excepthook
  
  install_rpyc_excepthook()
  
  
subject: Remove Code specific for IronPython - useless with 2.7