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Merge cleanup into first-try

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# Copyright (C) 2005 Canonical Ltd
 
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# Copyright (C) 2005, 2006, 2008, 2009, 2010 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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        # so buffer them in a StringIO instead
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        if getattr(f, 'tell', None) is not None:
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            return gzip.GzipFile(mode='rb', fileobj=f)
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        else:
 
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        try:
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            from cStringIO import StringIO
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            sio = StringIO(f.read())
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            return gzip.GzipFile(mode='rb', fileobj=sio)
 
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        finally:
 
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            f.close()