面向对象之继承与派生（学生管理系统)

##
class People:
    def __init__(self,name,age,weight):
        self.Name = name
        self.Age = age
        self.Weight = weight
    def achievement(self):
        """业绩"""
        return
    def work(self):
        """生活方式"""
        return
class Teacher(People):
    """老师"""
    def __init__(self,name,age,weight,concat):
        People.__init__(self,name,age,weight)
        self.concat = concat
    def achievement(self,walk):
        """讲课幽默"""
        walk.talk = self.concat
        return walk

    def work(self,course,score):
        """批改作业"""
        self.score = score
        print("%s 开始批改 %s 作业" %(self.Name,course))
        return (course,score)
class Student(People):
    def __init__(self,name,age,weight,course):
        People.__init__(self,name,age,weight)
        self.course = course
    def work(self,course):
        """提交作业"""
        return ("%s 已经提交 %s 作业"%(self.Name,course))

class Course:
    def __init__(self,course_name,course_startdate,course_price,teacher):
        self.course_name = course_name
        self.course_startdate = course_startdate
        self.course_price = course_price
        self.teacher = teacher
teach1_obj = Teacher('egon',39,136,18110221308)
couse1_obj = Course('python','2017-01-03',15800,teach1_obj)
stu1 = Student('piter',22,80,couse1_obj)

foinfo = {"Name":stu1.Name,"Age":stu1.Age,"course_name":stu1.course.course_name,
        "Name":couse1_obj.teacher.Name,"course_price":stu1.course.course_price,
        "course_startdate":stu1.course.course_startdate}
print ("学生名字	年龄	课程		老师		价格		上课时间")
getinfo = """{Name}		{Age}		{course_name}		{Name}		{course_price}		{course_startdate}
""".format_map(foinfo)
# print(stu1.Name,stu1.Age,stu1.course.course_name,
#       stu1.course.course_price,stu1.
#       course.course_startdate)
print(getinfo.strip('
'))
print(stu1.work(stu1.course.course_name))
scoreinfo = teach1_obj.work(couse1_obj.course_name,90)
print("学生名字	课程		得分")
getscorelist = """{Name}		{course_name}		{score}""".format_map({
    "Name":stu1.Name,"course_name":stu1.course.course_name,"score":scoreinfo[1]

}).strip('
')
print(getscorelist)

运行结果:
学生名字	　　　　年龄	　　　　 课程		老师		价格		上课时间
egon		22		python		egon		15800		2017-01-03
piter 已经提交 python 作业
egon 开始批改 python 作业
学生名字	　　　　课程		得分
piter		python		90