一个假设为 pygame.Surface 的变量看起来像一个字符串

Question

我刚刚在我的代码中添加了一个函数，该函数应该显示目录中的图像。它需要一个参数来指定它显示在哪个窗口中。当我尝试将它传递进来时，我收到以下错误：

Traceback (most recent call last):
  File "Pygame.py", line 122, in <module>
    Player.load()
  File "Pygame.py", line 74, in load
    screen.blit(self.path, (self.x, self.y))
TypeError: argument 1 must be pygame.Surface, not str

我的代码：

import pygame

#init the pygame and create a screen
pygame.init()
screen = pygame.display.set_mode((1080,720))
done = False

#colours
blue = (0,0,255)
red = (255,0,0)
green = (0,255,0)
black = (0,0,0)
white = (255,255,255)
yellow = (255,255,0)

#path to the background
bg_path = "Racing.png"

#path to the car image
car_path = "car.png"

#starts the game clock
clock = pygame.time.Clock()

#opening bg image
background_image = pygame.image.load(bg_path).convert()

#class for all of the objects on the screen
class shape():
    def __init__(self, place, x, y):
        self.place = place
        self.x = x
        self.y = y

class rectangle(shape):
    def __init__(self, place, colour, x, y, length, width):
        super().__init__(place,x, y)
        self.colour = colour
        self.length = length
        self.width = width

    def draw(self):
        pygame.draw.rect(screen, self.colour, pygame.Rect(self.x, self.y,
                         self.length, self.width))

    def move_up(self):
        self.y = self.y - 10

    def move_down(self):
        self.y = self.y + 10

    def move_right(self):
        self.x = self.x + 10

    def move_left(self):
        self.x = self.x - 10

class player(shape):
    def __init__(self, place, x, y, length, width, path):
        super().__init__(place,x, y)

        self.length = length
        self.width = width
        self.path = path

    def load(self):
        screen.blit(self.path, (self.x, self.y))

Rectangle = rectangle(screen, yellow, 540, 660, 60, 60)
Player = player(screen, 540, 600, 60, 60, car_path)
Player.load()

这不是所有的代码，但其余的与问题无关（我认为）。请告诉我是否需要更多代码。

Answer 1

car_path 在这里设置为string

car_path = "car.png"

但是blit() 需要pygame.Surface 对象作为pygame.image.load 会给你的第一个参数，即

car_path = pygame.image.load("car.png")

改为。