class Attendance:
#Constructor: takes a list of student names (strings).
def __init__(self, student_names):
self.list = set(student_names)
self.student_names = set()
#marks a student as present. Returns True if successful, False if the student does not exist.
def mark_present(self, student):
if student in self.list:
self.student_names.add(student)
return True
return False
#returns a list of students who are marked present.
def get_present_students(self):
return sorted(self.student_names)
#returns a list of students who are not marked present.
def get_absent_students(self):
return sorted(self.list - self.student_names)
#clears the attendance record.
def reset_attendance(self):
self.student_names.clear()
