def METHOD_NAME(tsk):
	"""
	Obtains all fortran tasks from the same build group. Those tasks must not have
	the attribute 'nomod' or 'mod_fortran_done'
	:return: a list of :py:class:`waflib.Tools.fc.fc` instances
	"""
	bld = tsk.generator.bld
	tasks = bld.get_tasks_group(bld.get_group_idx(tsk.generator))
	return [x for x in tasks if isinstance(x, fc) and not getattr(x, 'nomod', None) and not getattr(x, 'mod_fortran_done', None)]