def make_nonconflicting_schedule(self) -> 'list[Schedule]':
schedule = Schedule()
schedule_list = []
if len(self.course_manager.courses) > 0:
new_schedule_list = []
schedule_list = schedule.add_course(self.course_manager.courses[0])
for course in self.course_manager.get_courses()[1:]:
for schedule in schedule_list:
schedule.sort_by_time_period_manager()
#if schedule.has_time_conflict():
# print(schedule)
if not schedule.has_time_conflict():
#print(course.code)
new_schedule_list += schedule.add_course(course)
schedule_list = new_schedule_list[::]
new_schedule_list = []
return schedule_list
