class App: def __init__(self): self.db = DbManager() def initApp(self): while True: print(" Menu ".center(50, '*')) print( "1- List Students\n2- Add Student\n3- Update Student\n4- Delete Student\n5- Exit\n" ) choice = input("Your Choice: ") if choice == '1': self.displayStudents() elif choice == '2': self.addStudent() elif choice == '3': self.updateStudent() elif choice == '4': self.deleteStudent() elif choice == '5': self.db.closeConnection() break else: print("Only 1-2-3-4-5") def displayClasses(self): for i in self.db.getClasses(): print(f"{i.id}- {i.name}") def displayStudents(self): self.displayClasses() classid = int(input('*** Enter Class ID: ')) students = self.db.getStudentByClassId(classid) print(" Student List ".center(25, '*')) for i in students: print(f"{i.id}- {i.name} {i.surname}") def addStudent(self): self.displayClasses() classid = int(input('*** Enter Class ID: ')) number = input("Studen Number: ") name = input("Name: ") surname = input("Surname: ") birthdate = input("Birthdate (YYYY,MM,DD): ") gender = input("Gender (M,F): ") student = Students(None, number, name, surname, birthdate, gender, classid) self.db.addStudent(student) def updateStudent(self): self.displayStudents() studentid = int(input("Student ID: ")) student = self.db.getStudentById(studentid) print(student[0].name, student[0].surname) student[0].name = input('Name: ') or student[0].name student[0].surname = input('Surname: ') or student[0].surname student[0].birthdate = input( 'Birthdate (YYYY,MM,DD): ') or student[0].birthdate student[0].gender = input('Gender: ') or student[0].gender student[0].classid = input('Class ID: ') or student[0].classid self.db.updateStudent(student[0]) def deleteStudent(self): self.displayStudents() studentid = int(input("Student ID: ")) self.db.deleteStudent(studentid)