takes 1 positional argument but 2 were given error for dict

how to add two dict in cs list

I want to add two dictionaries to the cs list in the addcoursess function, but it gives an error
Text error: takes 1 positional argument but 2 were given

mainlist:

    cs = [
    {
        "title": "Python",
        "teacher": "Amiri",
    },
    {
        "title": "HTML",
        "teacher": "Dehyami",
    },
    {
        "title": "PHP",
        "teacher": "Enayati"
    }
]


class User:
    def __init__(self, fisrtname, lastname):
        self.fname = fisrtname
        self.lname = lastname

    def fullname(self):
        print(f"my fullname is {self.fname} {self.lname}")

class Student(User):
    def __init__(self, fisrtname, lastname, email):
        super().__init__(fisrtname, lastname)
        self.email = email
        self.coursess = []

    def fullname(self):
        print("i am an student")
        super().fullname()

    def printcoursess(self):
        if self.coursess:
            for course in self.coursess:
                print("Coursess : " + course["title"])
        else:
            print("There is no course")

Here is the class in which it is error

class Teacher(User):
    def __init__(self, fisrtname, lastname, code):
        super().__init__(fisrtname, lastname)
        self.code = code

    def addcoursess(item):
        dict = {}
        dict.update(item)
        cs.append(dict)
        print(dict)
    def fullname(self):
        print("i am an teacher")
        super().fullname()


t1 = Teacher("abolfazl", "zaker", 3223)

addcoursess function here

t1.addcoursess({"title": "Java", "teacher": "ganjeali"})

print(cs)

>Solution :

U miss the self argument in the function definition. Your Teacher class should look like this:

class Teacher(User):
    def __init__(self, fisrtname, lastname, code):
        super().__init__(fisrtname, lastname)
        self.code = code

    def addcoursess(self, item):
        dict = {}
        dict.update(item)
        cs.append(dict)
        print(dict)

    def fullname(self):
        print("i am an teacher")
        super().fullname()

Or if u don’t want to pass the self, the class should be defined with the @staticmethod decorator like this:

class Teacher(User):
        def __init__(self, fisrtname, lastname, code):
            super().__init__(fisrtname, lastname)
            self.code = code

        @staticmethod
        def addcoursess(item):
            dict = {}
            dict.update(item)
            cs.append(dict)
            print(dict)

        def fullname(self):
            print("i am an teacher")
            super().fullname()

Info about static method are here: https://docs.python.org/3/library/functions.html#staticmethod