# Author : Kelvin

 # Date : 2019/1/15 20:44

 """

 学校与老师关联

 课程与老师和学校关联

 """

 class School():

     def __init__(self, name, profession):

         self.name = name

         self.profession=profession

 class Teacher():

     def __init__(self, name, age, gender, school):

         self.name = name

         self.age = age

         self.gender = gender

         self.school=school

 class Course():

     def __init__(self, name, time, school, teacher):

         self.name = name

         self.time = time

         self.school = school

         self.teacher = teacher

 s1 = School("大庆师范学院", "计算机专业")

 s2 = School("大庆师范学院", "生物工程专业")

 s3 = School("大庆师范学院", "外国语专业")

 t1 = Teacher("kelvin", 22, "male", s1)

 t2 = Teacher("alex", 23, "male", s3)

 t3 = Teacher("jam", 25, "female", s2)

 msg1="""

 学校选项：

 1:"大庆师范学院", "计算机专业"

 2:"大庆师范学院", "生物工程专业"

 3:"大庆师范学院", "外国语专业"

 """

 msg2="""

 教师选项：

 1:"kelvin", 22, "male", "大庆师范学院", "计算机专业"

 2:"alex", 23, "male", "大庆师范学院", "外国语专业"

 3:"jam", 25, "female","大庆师范学院", "生物工程专业"

 """

 while True:

     print(msg1)

     choice1 = input("请选择学校专业：")

     s = {

         "": s1,

         "": s2,

         "": s3

     }

     if choice1 in s:

         sx = s[choice1]

     else:

         print("专业选择异常，请重试！")

         break

     print(msg2)

     choice2 = input("请选择老师：")

     t = {

         "": t1,

         "": t2,

         "": t3

     }

     if choice2 in t:

         tx = t[choice2]

     else:

         print("教师选择异常，请重试！")

         break

     course_name = input("请输入课程名：")

     course_time = input("请输入课程时长：")

     new_course = Course(course_name, course_time, sx, tx)

     print("选课成功！  [%s]课程所属的学校是[%s]专业是[%s]   老师名字[%s]年龄[%s]性别[%s]所属学校[%s]专业[%s]  课程时长：[%s]" % (

         new_course.name, new_course.school.name, new_course.school.profession, new_course.teacher.name,

         new_course.teacher.age, new_course.teacher.gender, new_course.teacher.school.name,new_course.teacher.school.profession,new_course.time))

     break