July 31, 2019 elective system

 import pickle

Import the pickle
 class Base:
     DEF Save (self, address): 
        with Open (address, ' WB ' ) AS F: # WB string write 
            the pickle.dump (self, F) # Note that a representative example of the self itself 

class school (Base):
     DEF  the __init__ (Self): 
        the self.name = iNPUT ( ' enter the name of the new school% s: ' % I) 
        self.addr = iNPUT ( ' enter address school% s: ' % I) 

class Lesson (Base):
     DEF  __init__ (Self, name, School):
        self.name= Name 
        self.school = School 


class Teacher (Base):
     DEF  __init__ (Self, name, School, Lesson): 
        self.name = name 
        self.school = School 
        self.lesson = Lesson 

msg = ' 1. Create a school \ the n- ' \
     ' 2. Create course \ n- ' \
     ' 3. Create teacher \ n- ' \
     ' 4.exit \ n- ' 
s_info = [] 
l_info = [] 
I, J, K = 0,0,0
 the while True:
     Print (MSG) 
    Choice = INPUT ( ' Enter create content: ' )
     IF Choice == ' . 1 ' : 
        I = I +. 1 
        s_info.append (School ()) 
        s_info [ I -1] .save ( ' School s.db% ' % I) # stored in the document 
        school_obj the pickle.load = (Open ( ' School s.db% ' % I, ' RB ' ))
         Print (I, school_obj .addr) 

    elif Choice == ' 2 ' :
        j=j+1
        lesson_name=input('请输入课程%s名称:'%j)
        if lesson_name=='python' or lesson_name=='linux':
            l1=Lesson(lesson_name,pickle.load(open('school1.db','rb')))
            l1.save('lesson%s.db'%j)
            print(j,l1.school.addr)
        elif lesson_name=='go' : 
            L2 = Lesson (lesson_name, the pickle.load (Open ( ' school2.db ' , ' RB ' ))) 
            l2.save ( ' Lesson s.db% ' % J)
             Print (J, l2.school.addr)
         the else :
             Print ( ' can only create python, linux, go three courses ' ) 
            j = j-1 # If you enter the wrong j + 1 automatically, so it is necessary to make amendments j 

    elif Choice == ' 3 ' : 
        k = k + 1'd
         IF K> 2:
            Print ( ' as long as the two teachers ' ) 
            Exit () 
        the else : 
            TEACHER_NAME = INPUT ( ' Enter the name of the teacher% s: ' % K) 
            T = Teacher (TEACHER_NAME, the pickle.load (Open ( ' School s.db% ' % K, ' RB ' )), the pickle.load (Open ( ' Lesson s.db% ' % K, ' RB ' ))) 
            t.save ( ' Teacher s.db% ' % K)
             Print (K, the pickle. Load (Open ( '% s.db Teacher ' % K, ' RB ' )). the __dict__ )
     elif Choice == ' . 4 ' :
         Print ( ' Game over ' ) 
        Exit () 
    the else :
         Print ( ' Enter 1,2,3,4 \ n- ' )

 

》》》》》 

1. Create a school
2. Create curriculum
3. Create teacher
4.exit

Please enter you need to create content: 1
Please enter the name of the new school 1: newboy
enter school 1 Address: shanghai
1 shanghai
1. Create a school
2. Create curriculum
3. Create teacher
4.exit

Please enter you need to create content: 1
Please enter the name of the new school 2: oldboy
enter school 2 Address: beijing
2 beijing
1. Create a school
2. Create curriculum
3. Create teacher
4.exit

Please enter you need to create content: 2
Enter the name Lesson 1: Python
1 shanghai
1. Create a school
2. Create curriculum
3. Create teacher
4.exit

Please enter the content to be created: linux
Please enter 1,2,3,4

1. Create a school
2. Create curriculum
3. Create teacher
4.exit

Please enter you need to create content: 2
Enter the name Lesson 2: Linux
2 shanghai
1. Create a school
2. Create curriculum
3. Create teacher
4.exit

Please enter you need to create content: 2
Enter the name Lesson 3: Go
3 beijing
1. Create a school
2. Create curriculum
3. Create teacher
4.exit

Please enter you need to create content: 2
Enter Lesson 4 Name: ada
only create python, linux, go three courses
1. Create a school
2. Create curriculum
3. Create teacher
4.exit

Please enter the content needs to be created: 3
Please enter the teacher 1 Name: SXJ
1 { 'name': 'SXJ', 'School': <__ main__.School Object AT 0x0388B6B0>, 'Lesson': <__ main __ Lesson Object AT 0x0388B730.> }
1. create a school
2. create curriculum
3. create teacher
4.exit

Please enter the content needs to be created: 3
Please enter the teacher 2 Name: Zyk
2 { 'name': 'Zyk', 'School': <__ main__.School Object AT 0x0388B5D0>, 'Lesson': <. __ main __ Lesson Object AT 0x0388B650> }
1. create a school
2. create curriculum
3. create teacher
4.exit

Please enter you need to create content: 3
as long as two teachers