def go(self):
        path = None
        if self.config.has_section("EMAIL"):
            path = config_get_section_attribute('DIRECTORIES', 'path_to_postfix')
        if not path:
            path = self.output_path + '/postfix'

        ns = self.make_ns()
        ns.PATH = path
        ns.EXT = '.txt'
        ns.INCLUDE = ' :include:'

        # The clear_folder routine erases all files in a certain folder
        # That has implications for postfix (when we're on the server), because
        # if you delete the .db files then postfix won't work. That is bad.
        # So, tell clear_folder to exclude them
        exclude_db_files = lambda x: x.endswith('.db')
        self.logger.debug("Clearing folders in postfix")
        clear_folder( ns.PATH, exclude=exclude_db_files)
        clear_folder(ns('{PATH}/grades'))
        clear_folder(ns('{PATH}/homerooms'))
        clear_folder(ns('{PATH}/classes'))
        clear_folder(ns('{PATH}/parentlink'))
        clear_folder(ns('{PATH}/teacherlink'))
        clear_folder(ns('{PATH}/special'))
        clear_folder(ns('{PATH}/departments'))
        clear_folder(ns('{PATH}/activities'))

        special_directory = []

        self.logger.debug("Setting up largest mailing lists first")

        for item in ['ALL', 'SEC', 'ELEM', 'KOREAN', 'CHINESE']:
            ns.this = item
            special_directory.append( ns('usebccparents{this}{COLON}{INCLUDE}{PATH}{SLASH}special{SLASH}usebccparents{this}{EXT}') )

        with open( ns('{PATH}/special{EXT}'), 'w') as f:
            f.write( "\n".join(special_directory) )

        usebccparentsALL = []
        usebccstudentsALL = []
        usebccparentsELEM = []
        usebccparentsSEC = []
        usebccstudentsSEC = []
        usebccparentsCHINESE = []
        usebccparentsCHINESEELEM = []
        usebccparentsCHINESESEC = []
        usebccparentsCHINESEGRADE = defaultdict(list)
        usebccparentsKOREAN = []
        usebccparentsKOREANELEM = []
        usebccparentsKOREANSEC = []
        usebccparentsKOREANGRADE = defaultdict(list)
        usebccparentsJAPANESE = []
        usebccparentsJAPANESEELEM = []
        usebccparentsJAPANESESEC = []
        usebccparentsJAPANESEGRADE = defaultdict(list)
        # SWA DISTRIBUTION LISTS
        usebccparentsSWA = []
        usebccstudentsSWA = []
        usebccparentsSWAGRADE = defaultdict(list)
        usebccstudentsSWAGRADE = defaultdict(list)
        # HR AND GRADE
        usebccparentsHOMEROOM = defaultdict(list)
        usebccparentsGRADE = defaultdict(list)
        usebccparentsHOMEROOM = defaultdict(list)
        usebccstudentsELEM = defaultdict(list)
        usebccstudentsGRADE = defaultdict(list)
        usebccstudentsHOMEROOM = defaultdict(list)
        parentlink = defaultdict(list)
        teacherlink = defaultdict(list)
        teachersGRADE = defaultdict(list)
        hrlink = defaultdict(list)
        classes = defaultdict(list)
        classesPARENTS = defaultdict(list)
        special = defaultdict(list)

        self.logger.debug('Clearing the table on moodle')
        self.server_information.create_temp_storage('student_email_info', 'list', 'email')
        self.server_information.empty_temp_storage('student_email_info')
        if self.arguments.update_moodle:
            write_db = self.server_information.add_temp_storage
        else:
            write_db = do_nothing
        self.logger.debug("Setting email lists")
        for student in self.tree.students:
            ns.homeroom = student.homeroom
            ns.grade = student.grade

            # TODO: Check for now grade or homeroom and warn
            if student.grade is "" or student.grade is None:
                self.logger.warn("This student does not have a grade:\n{}".format(student))
            if not student.homeroom:
                self.logger.warn("This student does not have a homeroom:\n{}".format(student))

            # USE ns.grade BECAUSE student.grade IS AN INTEGER
            # TODO: DO WE MAKE student.grade A STRING?
            # OR PUT THIS IN THE OBJECT SOMEWHOW?
            if ns.grade <= 0:
                ns.grade = {0: 'K', -1: 'R', -2: 'G', -3:'PK', -4:'N'}.get(ns.grade, None)

            usebccparentsALL.extend( student.guardian_emails )
            ns.grade and usebccparentsGRADE[ns.grade].extend(student.guardian_emails)
            ns.homeroom and usebccparentsHOMEROOM[ns.homeroom].extend(student.guardian_emails)

            if student.is_elementary:
                usebccparentsELEM.extend(student.guardian_emails)

            if student.is_secondary:
                usebccparentsSEC.extend(student.guardian_emails)
                usebccstudentsSEC.append(student.email)
                if ns.grade:
                    usebccstudentsGRADE[ns.grade].append(student.email)
                    teachersGRADE[ns.grade].extend(student.teacher_emails)
                if student.homeroom:
                    usebccstudentsHOMEROOM[ns.homeroom].append(student.email)
                parentlink[student.username].extend( student.guardian_emails )
                teacherlink[student.username].extend(student.teacher_emails)
                hrlink[student.username].append(student.homeroom_teacher_email)
                for group in student.group_names:
                    classes[group].append(student.email)
                    classesPARENTS[group].extend(student.guardian_emails)

            if student.is_chinese:
                usebccparentsCHINESE.extend( student.guardian_emails )
                student.is_secondary and usebccparentsCHINESESEC.extend( student.guardian_emails )
                student.is_elementary and usebccparentsCHINESEELEM.extend( student.guardian_emails )
                usebccparentsCHINESEGRADE[ns.grade].extend( student.guardian_emails )
            if student.is_korean:
                usebccparentsKOREAN.extend( student.guardian_emails )
                student.is_secondary and usebccparentsKOREANSEC.extend( student.guardian_emails )
                student.is_elementary and usebccparentsKOREANELEM.extend( student.guardian_emails )
                usebccparentsKOREANGRADE[ns.grade].extend( student.guardian_emails )
            if student.is_japanese:
                usebccparentsJAPANESE.extend( student.guardian_emails )
                student.is_secondary and usebccparentsJAPANESESEC.extend( student.guardian_emails )
                student.is_elementary and usebccparentsJAPANESEELEM.extend( student.guardian_emails )
                usebccparentsJAPANESEGRADE[ns.grade].extend( student.guardian_emails )
            if student.is_SWA:
                usebccparentsSWA.extend( student.guardian_emails )
                usebccstudentsSWA.append( student.email )
                usebccparentsSWAGRADE[ns.grade].extend( student.guardian_emails )
                usebccstudentsSWAGRADE[ns.grade].append( student.email )

        for ns.email in set(usebccparentsALL):
            write_db('student_email_info', list='usebccparentsALL', email=ns.email)

        for ns.email in set(usebccparentsSEC):
            write_db('student_email_info', list='usebccparentsSEC', email=ns.email)

        for ns.email in set(usebccparentsELEM):
            write_db('student_email_info', list='usebccparentsELEM', email=ns.email)

        for ns.email in set(usebccparentsSWA):
            write_db('student_email_info', list='usebccparentsSWA', email=ns.email)

        for ns.email in set(usebccstudentsSWA):
            write_db('student_email_info', list='usebccstudentsSWA', email=ns.email)

        for ns.grade in usebccparentsGRADE:
            for ns.email in set(usebccparentsGRADE[ns.grade]):
                write_db('student_email_info', list=ns('usebccparents{grade}'), email=ns('{email}'))

        for ns.grade in usebccstudentsGRADE:
            for ns.email in set(usebccstudentsGRADE[ns.grade]):
                write_db('student_email_info', list=ns('usebccstudents{grade}'), email=ns('{email}'))

        for ns.grade in teachersGRADE:
            for ns.email in set(teachersGRADE[ns.grade]):
                write_db('student_email_info', list=ns('teachers{grade}'), email=ns('{email}'))

        for ns.homeroom in usebccparentsHOMEROOM:
            for ns.email in set(usebccparentsHOMEROOM[ns.homeroom]):
                write_db('student_email_info', list=ns('usebccparents{homeroom}'), email=ns('{email}'))

        for ns.homeroom in usebccstudentsHOMEROOM:
            for ns.email in set(usebccstudentsHOMEROOM[ns.homeroom]):
                write_db('student_email_info', list=ns('usebccstudents{homeroom}'), email=ns('{email}'))

        for ns.student in teacherlink:
            for ns.email in set(teacherlink[ns.student]):
                write_db('student_email_info', list=ns('{student}TEACHERS'), email=ns('{email}'))

        for ns.student in parentlink:
            for ns.email in set(parentlink[ns.student]):
                write_db('student_email_info', list=ns('{student}PARENTS'), email=ns('{email}'))

        for ns.student in hrlink:
            for ns.email in set(hrlink[ns.student]):
                write_db('student_email_info', list=ns('{student}HR'), email=ns('{email}'))            

        for ns.klass in classes:
            for ns.email in classes[ns.klass]:
                write_db('student_email_info', list=ns('{klass}'), email=ns('{email}'))

        for ns.klass in classesPARENTS:
            for ns.email in classes[ns.klass]:
                write_db('student_email_info', list=ns('{klass}PARENTS'), email=ns('{email}'))

        # GRADES
        directory_write = []
        for ns.grade in usebccparentsGRADE:
            directory_write.append( ns('usebccparents{grade}{COLON}{INCLUDE}{PATH}{SLASH}grades{SLASH}usebccparents{grade}{EXT}') )
            with open( ns('{PATH}{SLASH}grades{SLASH}usebccparents{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccparentsGRADE[ns.grade])) )
        for ns.grade in usebccstudentsGRADE:
            directory_write.append( ns('usebccstudents{grade}{COLON}{INCLUDE}{PATH}{SLASH}grades{SLASH}usebccstudents{grade}{EXT}') )
            with open( ns('{PATH}{SLASH}grades{SLASH}usebccstudents{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccstudentsGRADE[ns.grade])) )
        for ns.grade in teachersGRADE:
            directory_write.append( ns('teachers{grade}{COLON}{INCLUDE}{PATH}{SLASH}grades{SLASH}teachers{grade}{EXT}') )
            with open( ns('{PATH}{SLASH}grades{SLASH}teachers{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(teachersGRADE[ns.grade])) )
        with open( ns('{PATH}{SLASH}grades{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )

            #HS

        # HOMEROOMS
        directory_write = []
        for ns.homeroom in usebccparentsHOMEROOM:
            directory_write.append( ns('usebccparents{homeroom}{COLON}{INCLUDE}{PATH}{SLASH}homerooms{SLASH}usebccparents{homeroom}{EXT}') )
            with open( ns('{PATH}{SLASH}homerooms{SLASH}usebccparents{homeroom}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccparentsHOMEROOM[ns.homeroom])) )
        for ns.homeroom in usebccstudentsHOMEROOM:
            directory_write.append( ns('usebccstudents{homeroom}{COLON}{INCLUDE}{PATH}{SLASH}homerooms{SLASH}usebccstudents{homeroom}{EXT}') )
            with open( ns('{PATH}{SLASH}homerooms{SLASH}usebccstudents{homeroom}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccstudentsHOMEROOM[ns.homeroom])) )
        with open( ns('{PATH}{SLASH}homerooms{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )

        # TEACHERLINK
        directory_write = []
        for ns.student in teacherlink:
            directory_write.append( ns('{student}TEACHERS{COLON}{INCLUDE}{PATH}{SLASH}teacherlink{SLASH}{student}TEACHERS{EXT}') )
            with open( ns('{PATH}{SLASH}teacherlink{SLASH}{student}TEACHERS{EXT}'), 'w') as f:
                f.write( '\n'.join(set(teacherlink[ns.student])) )
        with open( ns('{PATH}{SLASH}teacherlink{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )

        # PARENTLINK
        directory_write = []
        for ns.student in parentlink:
            directory_write.append( ns('{student}PARENTS{COLON}{INCLUDE}{PATH}{SLASH}parentlink{SLASH}{student}PARENTS{EXT}') )
            with open( ns('{PATH}{SLASH}parentlink{SLASH}{student}PARENTS{EXT}'), 'w') as f:
                f.write( '\n'.join(set(parentlink[ns.student])) )
        with open( ns('{PATH}{SLASH}parentlink{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )

        # HRLINK
        directory_write = []
        for ns.student in hrlink:
            if hrlink[ns.student]:  # not all kids have a homeroom teacher....
                directory_write.append( ns('{student}HR{COLON}{INCLUDE}{PATH}{SLASH}homeroomlink{SLASH}{student}HR{EXT}') )
                with open( ns('{PATH}{SLASH}homeroomlink{SLASH}{student}HR{EXT}'), 'w') as f:
                    try:
                        f.write( '\n'.join(set(hrlink[ns.student])) )
                    except TypeError:
                        pass
        with open( ns('{PATH}{SLASH}homeroomlink{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )
        
        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsALL{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsALL) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsSEC{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsSEC) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsELEM{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsELEM) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsCHINESE{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsCHINESE) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsCHINESESEC{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsCHINESESEC) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsCHINESEELEM{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsCHINESEELEM) )

        for ns.grade in usebccparentsCHINESEGRADE:
            with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsCHINESE{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccparentsCHINESEGRADE[ns.grade])) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsKOREAN{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsKOREAN) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsKOREANELEM{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsKOREANSEC) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsKOREANSEC{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsKOREANSEC) )

        for ns.grade in usebccparentsKOREANGRADE:
            with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsKOREAN{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccparentsKOREANGRADE[ns.grade])) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsJAPANESE{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsJAPANESE) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsJAPANESESEC{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsJAPANESESEC) )

        for ns.grade in usebccparentsJAPANESEGRADE:
            with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsJAPANESE{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccparentsJAPANESEGRADE[ns.grade])) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsSWA{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsSWA) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccstudentsSWA{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccstudentsSWA) )
                
        with open( ns('{PATH}{SLASH}special{EXT}'), 'w') as f:
            for ns.this in ['usebccparentsALL', 'usebccparentsSEC', 'usebccparentsELEM',
                            'usebccparentsKOREAN', 'usebccparentsKOREANSEC', 'usebccparentsKOREANELEM',
                            'usebccparentsCHINESE', 'usebccparentsCHINESESEC', 'usebccparentsCHINESEELEM',
                            'usebccparentsJAPANESE', 'usebccparentsJAPANESESEC', 'usebccparentsJAPANESEELEM', 
                            'usebccparentsSWA', 'usebccstudentsSWA']:
                f.write( ns('{this}{COLON}{INCLUDE}{PATH}{SLASH}special{SLASH}{this}{EXT}{NEWLINE}') )
            for ns.grade in usebccparentsKOREANGRADE:
                f.write( ns('usebccparentsKOREAN{grade}{COLON}{INCLUDE}{PATH}{SLASH}special{SLASH}usebccparentsKOREAN{grade}{EXT}{NEWLINE}') )
            for ns.grade in usebccparentsCHINESEGRADE:
                f.write( ns('usebccparentsCHINESE{grade}{COLON}{INCLUDE}{PATH}{SLASH}special{SLASH}usebccparentsCHINESE{grade}{EXT}{NEWLINE}') )
            for ns.grade in usebccparentsJAPANESEGRADE:
                f.write( ns('usebccparentsJAPANESE{grade}{COLON}{INCLUDE}{PATH}{SLASH}special{SLASH}usebccparentsJAPANESE{grade}{EXT}{NEWLINE}') )

        # CLASSES
        directory_write = []
        for ns.klass in classes:
            directory_write.append( ns('{klass}{COLON}{INCLUDE}{PATH}{SLASH}classes{SLASH}{klass}{EXT}') )
        for ns.klass in classesPARENTS:
            directory_write.append( ns('{klass}PARENTS{COLON}{INCLUDE}{PATH}{SLASH}classes{SLASH}{klass}PARENTS{EXT}') )
        with open( ns('{PATH}{SLASH}classes{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )

        for ns.klass in classes:
            with open( ns('{PATH}{SLASH}classes{SLASH}{klass}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(classes[ns.klass])) )

        for ns.klass in classesPARENTS:
            with open( ns('{PATH}{SLASH}classes{SLASH}{klass}PARENTS{EXT}'), 'w') as f:
                f.write( '\n'.join(set(classesPARENTS[ns.klass])) )

        self.logger.debug("Set up department batch emails")
        ##  SETUP DEPARTMENTS, including by homeroom teachers
        depart_dict = {}
        homeroom_teachers_dict = {}
        for teacher in self.tree.teachers:
            departments = teacher.get_departments()
            for department in departments:
                d_email_name = department_email_names.get(department)
                if not d_email_name:
                    continue
                if not d_email_name in list(depart_dict.keys()):
                    heads = department_heads.get(department, [])  # returns a list
                    depart_dict[d_email_name] = []
                    for head in heads:
                        self.logger.debug("Adding {} (the head) into department {}".format(head, d_email_name))
                        depart_dict[d_email_name].append(head + "@ssis-suzhou.net")
                if teacher and not teacher.email in depart_dict[d_email_name]:
                    self.logger.debug("Adding {} into department {}".format(teacher, d_email_name))
                    depart_dict[d_email_name].append(teacher.email)

            if teacher.homeroom:
                ns.homeroom = teacher.homeroom
                if not teacher.homeroom in homeroom_teachers_dict.keys():
                    homeroom_teachers_dict[teacher.homeroom] = True
                    setup_postfix = ns('{PATH}/departments{EXT}')
                    with open(setup_postfix, 'a') as f:
                        f.write(ns("homeroomteachers{homeroom}: :include:{PATH}/departments/homeroomteachers{homeroom}{EXT}\n"))
                setup_postfix = ns('{PATH}/departments/homeroomteachers{homeroom}{EXT}')
                with open(setup_postfix, 'a') as f:
                    f.write(teacher.email + '\n')

        for ns.department in list(depart_dict.keys()):
            # department is now actually the email name we want to use 
            setup_postfix = ns('{PATH}/departments{EXT}')
            with open(setup_postfix, 'a') as f:
                f.write( ns("{department}: :include:{PATH}/departments/{department}{EXT}\n") )

            setup_postfix = ns('{PATH}/departments/{department}{EXT}')
            with open(setup_postfix, 'w') as f:
                f.write( "\n".join(depart_dict[ns.department]) )

        # SETUP SECONDARY ACTIVITIES
        results = self.server_information.get_all_users_activity_enrollments()
        ns = NS()
        ns.domain = 'student.ssis-suzhou.net'
        activities_postfix = defaultdict(list)
        activities_postfix_parents = defaultdict(list)
        for result in results:
            activity_name, student_key = result
            student = self.tree.student_from_ID(student_key)
            if not student:
                # in case of outlyer
                continue
            if not student:
                self.logger.warning('This student is listed as having enrolled into an activity, ' + \
                                    'but no longer seems to be available at school. Ignored. {}'.format(student_key))
                continue
            activities_postfix[activity_name].append(student.email)
            activities_postfix_parents[activity_name].append(student.parent_link_email)

        # DO THE ACTIVITY EMAILS
        ns.path = config_get_section_attribute('DIRECTORIES', 'path_to_postfix')
        ns.base = 'activities'
        ns.SUFFIX = "ACT"
        ns.EXT = '.txt'
        ns.INCLUDE = ':include:'
        ns.activities_path = ns('{path}{SLASH}activities')
        with open(ns('{path}{SLASH}{base}{EXT}'), 'w'):
            pass

        for activity_name in activities_postfix:
            ns.handle = name_to_email(activity_name)
            ns.full_email = ns('{handle}{SUFFIX}')
            with open(ns('{path}{SLASH}{base}{EXT}'), 'a') as f:
                f.write(ns('{full_email}{COLON}{SPACE}{INCLUDE}' + \
                           '{activities_path}{SLASH}{full_email}{EXT}{NEWLINE}'))
            with open(ns('{activities_path}{SLASH}{full_email}{EXT}'), 'a') as f:
                f.write("\n".join(activities_postfix[activity_name]))

        ns.SUFFIX = "ACTPARENTS"
        for activity_name in activities_postfix_parents:
            ns.handle = name_to_email(activity_name)
            ns.full_email = ns('{handle}{SUFFIX}')
            with open(ns('{path}{SLASH}{base}{EXT}'), 'a') as f:
                f.write(ns('{full_email}{COLON}{SPACE}{INCLUDE}' + \
                           '{activities_path}{SLASH}{full_email}{EXT}{NEWLINE}'))
            with open(ns('{activities_path}{SLASH}{full_email}{EXT}'), 'a') as f:
                f.write("\n".join(activities_postfix_parents[activity_name]))
        
        # run newaliases command on exit if we're on the server
        newaliases_path = False
        if self.config.has_section('EMAIL'):
            newaliases_path = self.config['EMAIL'].get('newaliases_path')
        if newaliases_path:
            self.logger.info("Running newaliases")
            p = subprocess.Popen(newaliases_path, shell=True)
            self.logger.info(p.communicate())
        else:
            self.logger.warn("newaliases not run!")
    def process_schedules(self):
        super().process_schedules()

        path = None
        if config.has_section("EMAIL"):
            path = config_get_section_attribute('DIRECTORIES', 'path_to_postfix')
        if not path:
            path = self.output_path + '/postfix'

        ns = NS2()
        ns.PATH = path
        ns.EXT = '.txt'
        ns.INCLUDE = ' :include:'

        # The clear_folder routine erases all files in a certain folder
        # That has implications for postfix (when we're on the server), because
        # if you delete the .db files then postfix won't work. That is bad.
        # So, tell clear_folder to exclude them
        exclude_db_files = lambda x: x.endswith('.db')
        self.logger.debug("Clearing folders in postfix")
        clear_folder( ns.PATH, exclude=exclude_db_files)
        clear_folder(ns('{PATH}/grades'))
        clear_folder(ns('{PATH}/homerooms'))
        clear_folder(ns('{PATH}/classes'))
        clear_folder(ns('{PATH}/parentlink'))
        clear_folder(ns('{PATH}/teacherlink'))
        clear_folder(ns('{PATH}/special'))
        clear_folder(ns('{PATH}/departments'))
        clear_folder(ns('{PATH}/activities'))

        special_directory = []

        self.logger.debug("Setting up largest mailing lists first")

        for item in ['ALL', 'SEC', 'ELEM', 'KOREAN', 'CHINESE']:
            ns.this = item
            special_directory.append( ns('usebccparents{this}{COLON}{INCLUDE}{PATH}{SLASH}special{SLASH}usebccparents{this}{EXT}') )

        with open( ns('{PATH}/special{EXT}'), 'w') as f:
            f.write( "\n".join(special_directory) )

        usebccparentsALL = []
        usebccstudentsALL = []
        usebccparentsELEM = []
        usebccparentsSEC = []
        usebccstudentsSEC = []
        koreanstudentsSEC = []
        chinesestudentsSEC = []
        usebccparentsCHINESE = []
        usebccparentsCHINESEELEM = []
        usebccparentsCHINESESEC = []
        usebccparentsCHINESEGRADE = defaultdict(list)
        usebccparentsKOREAN = []
        usebccparentsKOREANELEM = []
        usebccparentsKOREANSEC = []
        usebccparentsKOREANGRADE = defaultdict(list)
        usebccparentsJAPANESE = []
        usebccparentsJAPANESEELEM = []
        usebccparentsJAPANESESEC = []
        usebccparentsJAPANESEGRADE = defaultdict(list)
        # SWA DISTRIBUTION LISTS
        usebccparentsSWA = []
        usebccstudentsSWA = []
        usebccparentsNOTSWA = []
        usebccparentsSWAGRADE = defaultdict(list)
        usebccstudentsSWAGRADE = defaultdict(list)
        usebccparentsGERMAN = []
        usebccparentsNOTGERMAN = []
        # HR AND GRADE
        usebccparentsHOMEROOM = defaultdict(list)
        usebccparentsGRADE = defaultdict(list)
        usebccparentsHOMEROOM = defaultdict(list)
        usebccstudentsELEM = defaultdict(list)
        usebccstudentsGRADE = defaultdict(list)
        usebccstudentsHOMEROOM = defaultdict(list)
        parentlink = defaultdict(list)
        teacherlink = defaultdict(list)
        teachersGRADE = defaultdict(list)
        hrlink = defaultdict(list)
        classes = defaultdict(list)
        classesPARENTS = defaultdict(list)
        special = defaultdict(list)

        for student in self.students.get_objects():
            ns.homeroom = student.homeroom
            ns.grade = student.grade

            # TODO: Check for now grade or homeroom and warn
            if student.grade is "" or student.grade is None:
                self.logger.warn("This student does not have a grade:\n{}".format(student))
            if not student.homeroom:
                self.logger.warn("This student does not have a homeroom:\n{}".format(student))

            # USE ns.grade BECAUSE student.grade IS AN INTEGER
            # TODO: DO WE MAKE student.grade A STRING?
            # OR PUT THIS IN THE OBJECT SOMEWHOW?
            if ns.grade <= 0:
                ns.grade = {0: 'K', -1: 'R', -2: 'G', -3:'PK', -4:'N'}.get(ns.grade, None)

            usebccparentsALL.extend( student.guardian_emails )
            ns.grade and usebccparentsGRADE[ns.grade].extend(student.guardian_emails)
            ns.homeroom and usebccparentsHOMEROOM[ns.homeroom].extend(student.guardian_emails)

            if student.is_elementary:
                usebccparentsELEM.extend(student.guardian_emails)
                parentlink[student.username].extend( student.guardian_emails )
                teacherlink[student.username].extend(student.teacher_emails)
                hrlink[student.username].append(student.homeroom_teacher_email)

            if student.is_secondary:
                usebccparentsSEC.extend(student.guardian_emails)
                usebccstudentsSEC.append(student.email)
                if ns.grade:
                    usebccstudentsGRADE[ns.grade].append(student.email)
                    teachersGRADE[ns.grade].extend(student.teacher_emails)
                if student.homeroom:
                    usebccstudentsHOMEROOM[ns.homeroom].append(student.email)
                parentlink[student.username].extend( student.guardian_emails )
                teacherlink[student.username].extend(student.teacher_emails)
                hrlink[student.username].append(student.homeroom_teacher_email)
                for group in student.groups:
                    classes[group.idnumber].append(student.email)
                    classesPARENTS[group.idnumber].extend(student.guardian_emails)

                if student.is_korean:
                    koreanstudentsSEC.append( student.email )
                if student.is_chinese:
                    chinesestudentsSEC.append( student.email )

            if student.is_chinese and not excluded_from_chinese_list(student):
                usebccparentsCHINESE.extend( student.guardian_emails )
                student.is_secondary and usebccparentsCHINESESEC.extend( student.guardian_emails )
                student.is_elementary and usebccparentsCHINESEELEM.extend( student.guardian_emails )
                usebccparentsCHINESEGRADE[ns.grade].extend( student.guardian_emails )
            if student.is_korean:
                usebccparentsKOREAN.extend( student.guardian_emails )
                student.is_secondary and usebccparentsKOREANSEC.extend( student.guardian_emails )
                student.is_elementary and usebccparentsKOREANELEM.extend( student.guardian_emails )
                usebccparentsKOREANGRADE[ns.grade].extend( student.guardian_emails )
            if student.is_japanese:
                usebccparentsJAPANESE.extend( student.guardian_emails )
                student.is_secondary and usebccparentsJAPANESESEC.extend( student.guardian_emails )
                student.is_elementary and usebccparentsJAPANESEELEM.extend( student.guardian_emails )
                usebccparentsJAPANESEGRADE[ns.grade].extend( student.guardian_emails )
            if student.is_german:
                usebccparentsGERMAN.extend( student.guardian_emails )
            else:
                usebccparentsNOTGERMAN.extend( student.guardian_emails )
            if student.is_SWA:
                usebccparentsSWA.extend( student.guardian_emails )
                usebccstudentsSWA.append( student.email )
                usebccparentsSWAGRADE[ns.grade].extend( student.guardian_emails )
                usebccstudentsSWAGRADE[ns.grade].append( student.email )
            else:
                usebccparentsNOTSWA.extend( student.guardian_emails )

        # GRADES
        directory_write = []
        for ns.grade in usebccparentsGRADE:
            directory_write.append( ns('usebccparents{grade}{COLON}{INCLUDE}{PATH}{SLASH}grades{SLASH}usebccparents{grade}{EXT}') )
            with open( ns('{PATH}{SLASH}grades{SLASH}usebccparents{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccparentsGRADE[ns.grade])) )
        for ns.grade in usebccstudentsGRADE:
            directory_write.append( ns('usebccstudents{grade}{COLON}{INCLUDE}{PATH}{SLASH}grades{SLASH}usebccstudents{grade}{EXT}') )
            with open( ns('{PATH}{SLASH}grades{SLASH}usebccstudents{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccstudentsGRADE[ns.grade])) )
        for ns.grade in teachersGRADE:
            directory_write.append( ns('teachers{grade}{COLON}{INCLUDE}{PATH}{SLASH}grades{SLASH}teachers{grade}{EXT}') )
            with open( ns('{PATH}{SLASH}grades{SLASH}teachers{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(teachersGRADE[ns.grade])) )
        with open( ns('{PATH}{SLASH}grades{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )

            #HS

        # HOMEROOMS
        directory_write = []
        for ns.homeroom in usebccparentsHOMEROOM:
            directory_write.append( ns('usebccparents{homeroom}{COLON}{INCLUDE}{PATH}{SLASH}homerooms{SLASH}usebccparents{homeroom}{EXT}') )
            with open( ns('{PATH}{SLASH}homerooms{SLASH}usebccparents{homeroom}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccparentsHOMEROOM[ns.homeroom])) )
        for ns.homeroom in usebccstudentsHOMEROOM:
            directory_write.append( ns('usebccstudents{homeroom}{COLON}{INCLUDE}{PATH}{SLASH}homerooms{SLASH}usebccstudents{homeroom}{EXT}') )
            with open( ns('{PATH}{SLASH}homerooms{SLASH}usebccstudents{homeroom}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccstudentsHOMEROOM[ns.homeroom])) )
        with open( ns('{PATH}{SLASH}homerooms{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )

        # TEACHERLINK
        directory_write = []
        for ns.student in teacherlink:
            directory_write.append( ns('{student}TEACHERS{COLON}{INCLUDE}{PATH}{SLASH}teacherlink{SLASH}{student}TEACHERS{EXT}') )
            with open( ns('{PATH}{SLASH}teacherlink{SLASH}{student}TEACHERS{EXT}'), 'w') as f:
                f.write( '\n'.join(set(teacherlink[ns.student])) )
        with open( ns('{PATH}{SLASH}teacherlink{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )

        # PARENTLINK
        directory_write = []
        for ns.student in parentlink:
            directory_write.append( ns('{student}PARENTS{COLON}{INCLUDE}{PATH}{SLASH}parentlink{SLASH}{student}PARENTS{EXT}') )
            with open( ns('{PATH}{SLASH}parentlink{SLASH}{student}PARENTS{EXT}'), 'w') as f:
                f.write( '\n'.join(set(parentlink[ns.student])) )
        with open( ns('{PATH}{SLASH}parentlink{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )

        # HRLINK
        directory_write = []
        for ns.student in hrlink:
            if hrlink[ns.student]:  # not all kids have a homeroom teacher....
                directory_write.append( ns('{student}HR{COLON}{INCLUDE}{PATH}{SLASH}homeroomlink{SLASH}{student}HR{EXT}') )
                with open( ns('{PATH}{SLASH}homeroomlink{SLASH}{student}HR{EXT}'), 'w') as f:
                    try:
                        f.write( '\n'.join(set(hrlink[ns.student])) )
                    except TypeError:
                      pass
        with open( ns('{PATH}{SLASH}homeroomlink{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsALL{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsALL) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsSEC{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsSEC) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsELEM{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsELEM) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsCHINESE{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsCHINESE) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsCHINESESEC{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsCHINESESEC) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsCHINESEELEM{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsCHINESEELEM) )

        for ns.grade in usebccparentsCHINESEGRADE:
            with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsCHINESE{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccparentsCHINESEGRADE[ns.grade])) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsKOREAN{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsKOREAN) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsKOREANELEM{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsKOREANSEC) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsKOREANSEC{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsKOREANSEC) )

        for ns.grade in usebccparentsKOREANGRADE:
            with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsKOREAN{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccparentsKOREANGRADE[ns.grade])) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsJAPANESE{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsJAPANESE) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsJAPANESESEC{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsJAPANESESEC) )

        for ns.grade in usebccparentsJAPANESEGRADE:
            with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsJAPANESE{grade}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(usebccparentsJAPANESEGRADE[ns.grade])) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsSWA{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsSWA) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsNOTSWA{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsNOTSWA) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsGERMAN{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsGERMAN) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccparentsNOTGERMAN{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccparentsNOTGERMAN) )

        with open( ns('{PATH}{SLASH}special{SLASH}usebccstudentsSWA{EXT}'), 'w') as f:
            f.write( '\n'.join(usebccstudentsSWA) )

        with open( ns('{PATH}{SLASH}special{SLASH}koreanstudentsSEC{EXT}'), 'w') as f:
            f.write( '\n'.join(koreanstudentsSEC) )

        with open( ns('{PATH}{SLASH}special{SLASH}chinesestudentsSEC{EXT}'), 'w') as f:
            f.write( '\n'.join(chinesestudentsSEC) )

        with open( ns('{PATH}{SLASH}special{EXT}'), 'w') as f:
            for ns.this in ['usebccparentsALL', 'usebccparentsSEC', 'usebccparentsELEM',
                            'usebccparentsKOREAN', 'usebccparentsKOREANSEC', 'usebccparentsKOREANELEM',
                            'usebccparentsCHINESE', 'usebccparentsCHINESESEC', 'usebccparentsCHINESEELEM',
                            'usebccparentsJAPANESE', 'usebccparentsJAPANESESEC', 'usebccparentsJAPANESEELEM',
                            'usebccparentsSWA', 'usebccstudentsSWA', 'usebccparentsNOTSWA', 'usebccparentsNOTGERMAN', 'usebccparentsGERMAN', 'koreanstudentsSEC', 'chinesestudentsSEC']:
                f.write( ns('{this}{COLON}{INCLUDE}{PATH}{SLASH}special{SLASH}{this}{EXT}{NEWLINE}') )
            for ns.grade in usebccparentsKOREANGRADE:
                f.write( ns('usebccparentsKOREAN{grade}{COLON}{INCLUDE}{PATH}{SLASH}special{SLASH}usebccparentsKOREAN{grade}{EXT}{NEWLINE}') )
            for ns.grade in usebccparentsCHINESEGRADE:
                f.write( ns('usebccparentsCHINESE{grade}{COLON}{INCLUDE}{PATH}{SLASH}special{SLASH}usebccparentsCHINESE{grade}{EXT}{NEWLINE}') )
            for ns.grade in usebccparentsJAPANESEGRADE:
                f.write( ns('usebccparentsJAPANESE{grade}{COLON}{INCLUDE}{PATH}{SLASH}special{SLASH}usebccparentsJAPANESE{grade}{EXT}{NEWLINE}') )

        # CLASSES
        directory_write = []
        for ns.klass in classes:
            directory_write.append( ns('{klass}{COLON}{INCLUDE}{PATH}{SLASH}classes{SLASH}{klass}{EXT}') )
        for ns.klass in classesPARENTS:
            directory_write.append( ns('{klass}PARENTS{COLON}{INCLUDE}{PATH}{SLASH}classes{SLASH}{klass}PARENTS{EXT}') )
        with open( ns('{PATH}{SLASH}classes{EXT}'), 'w') as f:
            f.write( '\n'.join(directory_write) )

        for ns.klass in classes:
            with open( ns('{PATH}{SLASH}classes{SLASH}{klass}{EXT}'), 'w') as f:
                f.write( '\n'.join(set(classes[ns.klass])) )

        for ns.klass in classesPARENTS:
            with open( ns('{PATH}{SLASH}classes{SLASH}{klass}PARENTS{EXT}'), 'w') as f:
                f.write( '\n'.join(set(classesPARENTS[ns.klass])) )

        self.logger.debug("Set up department batch emails")
        ##  SETUP DEPARTMENTS, including by homeroom teachers
        depart_dict = {}
        homeroom_teachers_dict = {}
        for teacher in self.teachers.get_objects():
            departments = teacher.get_departments()
            for department in departments:
                d_email_name = department_email_names.get(department)
                if not d_email_name:
                    continue
                if not d_email_name in list(depart_dict.keys()):
                    heads = department_heads.get(department, [])  # returns a list
                    depart_dict[d_email_name] = []
                    for head in heads:
                        self.logger.debug("Adding {} (the head) into department {}".format(head, d_email_name))
                        depart_dict[d_email_name].append(head + "@ssis-suzhou.net")
                if teacher and not teacher.email in depart_dict[d_email_name]:
                    self.logger.debug("Adding {} into department {}".format(teacher, d_email_name))
                    depart_dict[d_email_name].append(teacher.email)

            if teacher.homeroom:
                ns.homeroom = teacher.homeroom
                if not teacher.homeroom in homeroom_teachers_dict.keys():
                    homeroom_teachers_dict[teacher.homeroom] = True
                    setup_postfix = ns('{PATH}/departments{EXT}')
                    with open(setup_postfix, 'a') as f:
                        f.write(ns("homeroomteachers{homeroom}: :include:{PATH}/departments/homeroomteachers{homeroom}{EXT}\n"))
                setup_postfix = ns('{PATH}/departments/homeroomteachers{homeroom}{EXT}')
                with open(setup_postfix, 'a') as f:
                    f.write(teacher.email + '\n')

        for ns.department in list(depart_dict.keys()):
            # department is now actually the email name we want to use
            setup_postfix = ns('{PATH}/departments{EXT}')
            with open(setup_postfix, 'a') as f:
                f.write( ns("{department}: :include:{PATH}/departments/{department}{EXT}\n") )

            setup_postfix = ns('{PATH}/departments/{department}{EXT}')
            with open(setup_postfix, 'w') as f:
                f.write( "\n".join(depart_dict[ns.department]) )