面向对象之组合（学生管理系统)

#--*-- coding: utf-8 --*--
class Teacher:
    """教师"""
    def __init__(self,teach_name,teach_age,teach_date,course):
        self.teach_name = teach_name
        self.teach_age = teach_age
        self.teach_date = teach_date
        self.course = course
class Course:
    """课程"""
    def __init__(self,course_name,course_price,course_startdate):
        self.course_name = course_name
        self.course_price = course_price
        self.course_startdate = course_startdate
class Student:
    """学生"""
    def __init__(self,stu_name,stu_age,course,teacher,credit):
        self.stu_name = stu_name
        self.stu_age = stu_age
        self.course = course
        self.credit = credit
        self.teacher = teacher
    def study(self,obj):
        print("%s study good in  %s"%(
            self.stu_name, self.course.course_name
        ))
    def game(self):
        print("%s study unot very good in %s"%(
            self.stu_name,self.course.course_name
        ))
class Date:
    """日期"""
    def __init__(self,start_time,end_time,course):
        self.start_time = start_time
        self.end_time = end_time
        self.course = course
class Credit:
    """分数"""
    def __init__(self,score,course):
        self.score = score
        self.course = course
course_obj = Course('python', 15800, '2017-02-19')
teacher_obj = Teacher('alex','22','2017-01',course_obj)
credits_obj = Credit('90',course_obj)
stu1 = Student('piter',20,course_obj,teacher_obj,credits_obj ) #引入对象，方便后期可以直接调用它内部属性或者方法
stu2 = Student('tido',12,course_obj,teacher_obj,credits_obj )
go_info = []
go_info.append([{"stu_name":stu1.stu_name,
                "teach_name":stu1.teacher.teach_name,
                "course_name":stu1.course.course_name,
                "score":stu1.credit.score,
                "course_price":stu1.course.course_price
                },{"stu_name":stu2.stu_name,
                   "teach_name":stu2.teacher.teach_name,
                   "course_name":stu2.course.course_name,
                   "score":20, #stu2.credit.score
                   "course_price":stu2.course.course_price
                }])
print("学生 \t\t""老师\t\t""课程\t\t""成绩\t""课程价格")
for i in go_info[0]:
    stuinfo = """{stu_name}\t\t{teach_name}\t\t{course_name}\t\t{score}\t\t{course_price}
""".format_map(i).strip('\n')
    print(stuinfo)
stu1.study(course_obj)
stu2.game()
# print(id(stu1.course.course_name)) #6670576
# print(id(course_obj.course_name))
运行结果:
学生 		老师		课程		成绩	课程价格
piter		alex		python		90		15800
tido		alex		python		20		15800