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	# Copyright (C) 2015 Stefano Zacchiroli <zack@upsilon.cc>			# Copyright (C) 2015 Stefano Zacchiroli <zack@upsilon.cc>
	# License: GNU General Public License version 3, or any later version			# License: GNU General Public License version 3, or any later version
	# See top-level LICENSE file for more information			# See top-level LICENSE file for more information

	from contextlib import contextmanager			from contextlib import contextmanager


	@contextmanager			@contextmanager
	def session_scope(mk_session):			def session_scope(mk_session):
	session = mk_session()			session = mk_session()
	try:			try:
	yield session			yield session
	session.commit()			session.commit()
	except:			except: # noqa
	session.rollback()			session.rollback()
	raise			raise
	finally:			finally:
	session.close()			session.close()