class Student:

    students: list["Student"] = []


    def __init__(self, first_name: str, last_name: str, total_mark: int) -> None:
        self.first_name = first_name
        self.last_name = last_name
        self.total_mark = total_mark
        self.students.append(self)


    def __repr__(self) -> str:
        return f'Student {self.first_name} {self.last_name} has mark: {self.total_mark}'


class Party:

    @staticmethod
    def is_student_invited(student: Student):
        return 500 > student.total_mark > 250

    @staticmethod
    def notify_student_failed_course (students: list) -> list [Student]:
        for student in students:
            if 250 > student.total_mark or student.total_mark > 500:
                print(student.total_mark)


    def get_invited_students(self, students: list) -> list[Student]:
        invited_student_list = []
        for student in self.students:
            if self.is_student_invited(student) == True:
                invited_student_list.append(student)
            else:
                self.notify_student_failed_course(student)


student1 = Student('Tom', 'Brown', 400)
student2 = Student('Kate', 'Bel', 350)
student3 = Student('Anton', 'Dee', 43)
student4 = Student('Mike', 'pike', 345)


print(Party.get_invited_students(Student.students))

I need to create a method get_invited_students, that returns list of students, that is invited to a party(with total mark 250 - 500) using method is_student_invited(student). When I launch this code, i see TypeError: Party.get_invited_students() missing 1 required positional argument: 'students'. What I did wrong ?

CodePudding user response：

Change Party class as below

class Party:

    @staticmethod
    def is_student_invited(student: Student):
        return 500 > student.total_mark > 250

    @staticmethod
    def notify_student_failed_course (student: Student):
        if 250 > student.total_mark or student.total_mark > 500:
            print(student.total_mark)

    @staticmethod
    def get_invited_students(students: list) -> list[Student]:
        invited_student_list = []
        for student in students:
            if Party.is_student_invited(student) == True:
                invited_student_list.append(student)
            else:
                Party.notify_student_failed_course(student)
        return invited_student_list

CodePudding user response：

You need to init class before call function

party = Party()
print(party.get_invited_students(Student.students))