New to code and bad at inheritance. Trying to make randomized tictactoe AI python3

Question

I'm trying to make an AI that plays with the player but it keeps giving me a TypeError:

TypeError: __init__() missing 1 required positional argument: 'sign'.

from random import choice
class Player:
    def __init__(self, name, sign, board = None):
        self.name = name  # player's name
        self.sign = sign  # player's sign O or X
        self.board = board
    def get_sign(self):
        # return an instance sign
        return self.sign
    def get_name(self):
        # return an instance name
        return self.name
    def choose(self, board):
        # prompt the user to choose a cell
        # if the user enters a valid string and the cell on the board is empty, update the board
        # otherwise print a message that the input is wrong and rewrite the prompt
        # use the methods board.isempty(cell), and board.set(cell, sign)
        while True:
            cell = input(f"{self.name}, {self.sign}: Enter a cell [A-C][1-3]:\n")
            cell = cell.upper()
            #checks to see if input matches to a cell and if the cell is empty
            if cell == "A1" or cell == "B1" or cell == "C1" or cell == "A2" or cell == "B2" or cell == "C2" or cell == "A3" or cell == "B3" or cell == "C3":
                if board.isempty(cell):
                    board.set(cell, self.sign)
                    break
                else:
                    print("You did not choose correctly.")
            else:
                print("You did not choose correctly.")

class AI(Player):
    def __init__(self, name, sign, board = None):
        super().__init__(board)
        self.sign = sign
        self.name = name
    def choose(self, board):
        valid_moves = ["A1", "A2", "A3", "B1", "B2", "B3", "C1", "C2", "C3"]
        cell = choice(valid_moves)
        board.set(cell, self.sign)

I call it in another file like this:

    player1 = AI("Bob", "X", board)    

Answer 1

Your problem is in the inherited class AI.

In this class, you have created __init__ with 3 parameters and inside this __init__ you are calling the __init__ of the parent class, and this parent class is Player. But if you check the Player class, you will see that its __init__ has 3 parameters of which two are mandatory: name and sign.

In the AI class, replace

super().__init__(board) 

by

super().__init__(name,sign,board)