'MyList' object does not support item assignment

I got it! I implemented the special method setitem and getitem and it worked. Thank you all

class MyList:
    def __init__(self,list):
        self.list=list

    def __getitem__(self, index):
        return self.list[index]
    
    def __setitem__(self, index, value):
        self.list[index] = value

You are probably trying to create a new MyList type which should have the functionalities of a normal Python list plus some functionalities you might like to add or modify. For this to work, you need to inherit from the inbuilt Python list class, like so,

class MyList(list):
    pass

list1=MyList([1,2,3,4,5])

list1[0]=5

Now in your MyList class, define only those methods which you want to change in the inbuilt list class

Since you're trying to better understand OOP, here's something you can try: Subclass list itself, so your class gets all the properties that lists do.

class MyList(list):
    def __init__(self,list):
        super().__init__(list)

list1 = MyList([1,2,3,4,5])
list1[0] = 5

print(list1)
# [5, 2, 3, 4, 5]

class MyList:
    def __init__(self,list):
        self.list=list
    def __str__(self):
        return str(self.__dict__)

list1=MyList([1,2,3,4,5])
print(list1)

list1.list[0]=5
print(list1)

You need to assign to the list attribute not to the class

You don't have any code in the class that allows for item assignment. For an object to allow item assignment, it needs to implement __setitem__.

You would need something like:

class MyList:
    def __init__(self,list):
        self.list=list

    def __setitem__(self, i, elem):
        self.list[i] = elem