我有一个错误：NameError: name 'GameDisplay'

Question

我正在尝试使用 python 在 pycharm 中制作游戏，但我有一个未定义的名称。我寻找有关如何解决此问题的信息，我能找到的最佳解决方法是在第 16 行将名称从 gameDisplay 更改为 GameDisplay，但它根本没有帮助。以下是我收到的完整错误消息。

Traceback (most recent call last):

  File "C:/Users/Zack's PC/AppData/Roaming/JetBrains/PyCharmCE2020.1/scratches/main1.py", line 30, in <module>

    car(x,y)

  File "C:/Users/Zack's PC/AppData/Roaming/JetBrains/PyCharmCE2020.1/scratches/main1.py", line 16, in car

    GameDisplay.blit(carImg,(x,y))

NameError: name 'GameDisplay' is not defined

Process finished with exit code 1

这是文件：

  ***import pygame

pygame.init()

display_width= 900

display_height=600

black= (0,0,0)

white= (255,255,255)

red= (255,0,0)

screen= pygame.display.set_mode((display_width,display_height))

pygame.display.set_caption('Race Car')

clock = pygame.time.Clock()

carImg = pygame.image.load('C:/Users/Zack\'s PC/Pictures/gameimages/racecarimage.png')

def car(x,y):

    gameDisplay.blit(carImg,(x,y)) 

x = (display_height * 0.45)

y = (display_width * 0.8)

crashed = False

while not crashed:

    for event in pygame.event.get():

        if event.type == pygame.QUIT:

            crashed = True

    car(x,y)

    gameDisplay.fill(white)

    pygame.display.update()

    clock.tick(60)

pygame.quit()

quit()***

Answer 1

问题是你没有创造gameDisplay&nbsp;=&nbsp;pygame.display.set_mode(...)但screen&nbsp;=&nbsp;pygame.display.set_mode(...)现在你必须使用screen而不是gameDisplayscreen.blit(...) screen.fill(white)或者你必须使用gameDisplay&nbsp;=&nbsp;pygame.display.set_mode(...)代替screen&nbsp;=&nbsp;pygame.display.set_mode(...)