AttributeError: type object has no attribute "id" PYTHON
Question: So I was trying to make a basic python pong game when this error came up: It
seems to say that AttributeError: type object has no attribute "id" which I
have no idea what it means.

    
    
    C:\Users\****\AppData\Local\Programs\Python\Python35-32\python.exe C:/Users/****/untitled/src/testing.py
    Traceback (most recent call last):
      File "C:/Users/****/untitled/src/testing.py", line 113, in <module>
        ball.draw()
      File "C:/Users/****/untitled/src/testing.py", line 36, in draw
        if self.hit_paddle2(pos) == True:
      File "C:/Users/****/untitled/src/testing.py", line 53, in hit_paddle2
        paddle2_pos = self.canvas.coords(self.paddle2.id)
    AttributeError: type object 'Paddle2' has no attribute 'id'
    
    Process finished with exit code 1
    

This is the code I used:

    
    
    from tkinter import *
    import random
    import time
    
    tk = Tk()
    tk.title("Game")
    tk.resizable(0, 0)
    tk.wm_attributes("-topmost", 1)
    canvas = Canvas(tk, width=500, height=400, bd=0, highlightthickness=0)
    canvas.pack()
    tk.update()
    
    
    class Ball:
        def __init__(self, canvas, paddle, paddle2, color):
            self.canvas = canvas
            self.paddle = paddle
            self.paddle2 = paddle2
            self.id = canvas.create_oval(10, 10, 25, 25, fill=color)
            self.canvas.move(self.id, 245, 100)
            starts = [-3, -2, -1, 1, 2, 3]
            random.shuffle(starts)
            self.x = starts[0]
            self.y = -3
            self.canvas_height = self.canvas.winfo_height()
            self.canvas_width = self.canvas.winfo_width()
            self.hit_bottom = False
    
        def draw(self):
            self.canvas.move(self.id, self.x, self.y)
            pos = self.canvas.coords(self.id)
            if pos[1] <= 0:
                self.y = 3
            if self.hit_paddle(pos) == True:
                self.y = -3
            if self.hit_paddle2(pos) == True:
                self.y = 3
            if pos[3] >= self.canvas_height:
                self.hit_bottom = True
            if pos[0] <= 0:
                self.x = 3
            if pos[2] >= self.canvas_width:
                self.x = -3
    
        def hit_paddle(self, pos):
            paddle_pos = self.canvas.coords(self.paddle.id)
            if pos[2] >= paddle_pos[0] and pos[0] <= paddle_pos[2]:
                if pos[3] >= paddle_pos[1] and pos[3] <= paddle_pos[3]:
                    return True
            return False
    
        def hit_paddle2(self, pos):
            paddle2_pos = self.canvas.coords(self.paddle2.id)
            if pos[2] >= paddle2_pos[0] and pos[0] <= paddle2_pos[2]:
                if pos[3] >= paddle2_pos[1] and pos[3] <= paddle2_pos[3]:
                    return True
            return False
    
    
    class Paddle:
        def __init__(self, canvas, color):
            self.canvas = canvas
            self.id = canvas.create_rectangle(0, 0, 100, 10, fill=color)
            self.canvas.move(self.id, 200, 300)
            self.x = 0
            self.canvas_width = self.canvas.winfo_width()
            self.canvas.bind_all('<KeyPress-Left>', self.turn_left)
            self.canvas.bind_all('<KeyPress-Right>', self.turn_right)
    
        def turn_left(self, evt):
            self.x = -2
    
        def turn_right(self, evt):
            self.x = 2
    
        def draw(self):
            self.canvas.move(self.id, self.x, 0)
            pos = self.canvas.coords(self.id)
            if pos[0] <= 0:
                self.x = 0
            elif pos[2] >= self.canvas_width:
                self.x = 0
    
    class Paddle2:
        def __init__(self, canvas, color):
            self.canvas = canvas
            self.id = canvas.create_rectangle(0, 10, 100, 10, fill=color)
            self.canvas.move(self.id, 200, 300)
            self.x = 0
            self.canvas_width = self.canvas.winfo_width()
            self.canvas.bind_all('<KeyPress-W>', self.turn_left)
            self.canvas.bind_all('<KeyPress-A>', self.turn_right)
    
        def turn_left(self, evt):
            self.x = -2
    
        def turn_right(self, evt):
            self.x = 2
    
        def draw(self):
            self.canvas.move(self.id, self.x, 0)
            pos = self.canvas.coords(self.id)
            if pos[0] <= 0:
                self.x = 0
            elif pos[2] >= self.canvas_width:
                self.x = 0
    
    paddle = Paddle(canvas, 'blue')
    ball = Ball(canvas, paddle, Paddle2, 'red')
    paddle2 = Paddle2(canvas, 'blue')
    while 1:
        if ball.hit_bottom == False:
            ball.draw()
            paddle.draw()
            paddle2.draw()
        tk.update_idletasks()
        tk.update()
        time.sleep(0.01)
    


Answer: You need to pass instances of `Paddle` and `Paddle2` to `Ball` constructor.

    
    
    paddle = Paddle(canvas, 'blue')
    paddle2 = Paddle2(canvas, 'blue')
    ball = Ball(canvas, paddle, paddle2, 'red')
    

