# encoding: utf-8

class Student:  
    def __init__(self, name, grade, age):  
        self.name = name  
        self.grade = grade
        self.age = age
    def set_name(self, name):
        self.name = name

class courseStudent(Student):
    '''inherited class'''
    def __init__(self, course, name, grade, age):  
	Student.__init__(self, name, grade, age)
	self.course = course

    def set_course(self, course):
        self.course = course

list_students = []
list_students.append( Student('john', 'B', 15) )
list_students.append( Student('dave', 'A', 12) )
list_students.append( Student('jane', 'A', 10) )
list_students[0].set_name('John')

list_courseStudents = []
list_courseStudents.append( courseStudent('cc', 'mary', 'A', 14) )
list_courseStudents.append( courseStudent('ie', 'jane', 'B', 15) )
list_courseStudents.append( courseStudent('nlp', 'alice', 'A', 16) )

for student in list_students:
    print student.name, student.grade, student.age

for student in list_courseStudents:
    print 'Course: %s Name: %s Grade: %s Age: %d' % (student.course, student.name, student.grade, student.age)
    print student.course, student.name, student.grade, student.age