Retrieve_Data.py
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	## This file is part of Invenio.
	## Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010, 2011 CERN.
	##
	## Invenio is free software; you can redistribute it and/or
	## modify it under the terms of the GNU General Public License as
	## published by the Free Software Foundation; either version 2 of the
	## License, or (at your option) any later version.
	##
	## Invenio 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
	## General Public License for more details.
	##
	## You should have received a copy of the GNU General Public License
	## along with Invenio; if not, write to the Free Software Foundation, Inc.,
	## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.

	__revision__ = "$Id$"

	## Description: function Get_Field
	## This function returns the value of the specified field
	## from the specified document
	## Author: T.Baron
	##
	## PARAMETERS: fieldname: marc21 code
	## bibrec: system number of the bibliographic record

	import string

	from invenio.legacy.search_engine import print_record

	def Get_Field(fieldname,bibrec):
	"""
	This function returns the value of the specified field
	from the specified document
	"""
	value = string.strip(print_record(int(bibrec),'tm',[fieldname]))
	return value