Python面向对象组合（选课系统示例）

 1 # Author : Kelvin
 2 # Date : 2019/1/15 20:44
 3 
 4 """
 5 学校与老师关联
 6 课程与老师和学校关联
 7 """
 8 
 9 
10 class School():
11     def __init__(self, name, profession):
12         self.name = name
13         self.profession=profession
14 
15 class Teacher():
16     def __init__(self, name, age, gender, school):
17         self.name = name
18         self.age = age
19         self.gender = gender
20         self.school=school
21 
22 
23 class Course():
24     def __init__(self, name, time, school, teacher):
25         self.name = name
26         self.time = time
27         self.school = school
28         self.teacher = teacher
29 
30 
31 s1 = School("大庆师范学院", "计算机专业")
32 s2 = School("大庆师范学院", "生物工程专业")
33 s3 = School("大庆师范学院", "外国语专业")
34 
35 t1 = Teacher("kelvin", 22, "male", s1)
36 t2 = Teacher("alex", 23, "male", s3)
37 t3 = Teacher("jam", 25, "female", s2)
38 
39 
40 msg1="""
41 学校选项：
42 1:"大庆师范学院", "计算机专业"
43 2:"大庆师范学院", "生物工程专业"
44 3:"大庆师范学院", "外国语专业"
45 """
46 msg2="""
47 教师选项：
48 1:"kelvin", 22, "male", "大庆师范学院", "计算机专业"
49 2:"alex", 23, "male", "大庆师范学院", "外国语专业"
50 3:"jam", 25, "female","大庆师范学院", "生物工程专业"
51 """
52 while True:
53     print(msg1)
54     choice1 = input("请选择学校专业：")
55     s = {
56         "1": s1,
57         "2": s2,
58         "3": s3
59     }
60     if choice1 in s:
61         sx = s[choice1]
62     else:
63         print("专业选择异常，请重试！")
64         break
65 
66     print(msg2)
67     choice2 = input("请选择老师：")
68     t = {
69         "1": t1,
70         "2": t2,
71         "3": t3
72     }
73     if choice2 in t:
74         tx = t[choice2]
75     else:
76         print("教师选择异常，请重试！")
77         break
78     course_name = input("请输入课程名：")
79     course_time = input("请输入课程时长：")
80     new_course = Course(course_name, course_time, sx, tx)
81     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]" % (
82         new_course.name, new_course.school.name, new_course.school.profession, new_course.teacher.name,
83         new_course.teacher.age, new_course.teacher.gender, new_course.teacher.school.name,new_course.teacher.school.profession,new_course.time))
84     break
Python面向对象 组合（选课系统示例）

Python面向对象组合（选课系统示例）
