[Tutor] Type error when doing Pygame

[Cravan]

Dear Matt,
	Thanks for your help! It works now ( 
Cravan

On 28/9/19, 10:18 PM, "Tutor on behalf of Mats Wichmann" <tutor-bounces+savageapple850=gmail.com at python.org on behalf of mats at wichmann.us> wrote:

    On 9/28/19 5:53 AM, Cravan wrote:
    > Dear Alan and Cameron,
    > 	Thank you for your input. However, after removing the first "screen" argument, I receive another error:
    > ###################
    > Traceback (most recent call last):
    >    File "final_project.py", line 134, in <module>
    >      g.run()
    >    File "final_project.py", line 37, in run
    >      self.draw()
    >    File "final_project.py", line 64, in draw
    >      self.food_food(5, 5, self.food_bar)
    >    File "final_project.py", line 50, in food_food
    >      pygame.draw.rect(self, GREEN, fill_rect)
    > TypeError: argument 1 must be pygame.Surface, not Game
    > 
    > I apologise if this seems like a really silly question, but I don’t really code much and am not really proficient in coding. May I know how to rectify this?
    
    It's not silly, but you do figure out how Pygame's methods need to be 
    called.  Clipped from their docs:
    
      pygame.draw.rect()
         draw a rectangle
         rect(surface, color, rect) -> Rect
         rect(surface, color, rect, width=0) -> Rect
    
         Draws a rectangle on the given surface.
         Parameters:	
    
             surface (Surface) -- surface to draw on
    
    
    that makes sense... you need something to draw on.
    
    you've passed it "self", which is a Game instance, and it doesn't know 
    what to do with that.  You need to pass it a pygame.Surface instance, as 
    the exception message says.  Presumably that would be something that has 
    been previously set up, then stored as an attribute in "self" so that 
    you can access it as needed.  That has happened in your initialization 
    method, where you create a Surface by calling pygame.display.set_mode() 
    and store the result in self.screen.   So almost certainly your call to 
    draw_rect should be passing self.screen as the first aregument, rather 
    than self.
    
    Does that make sense?
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