Python屏幕黑屏一段时间，然后关闭

Question

要点（ https://gist.github.com/tobias76/8dc2e1af90f1916a2106 ）中的代码已完全损坏，没有任何例外。 黑屏并在几秒钟后关闭，我将使用代码更具体，但绝对没有错误消息。 就该程序而言，它确实有效。 根据要求，这是我的代码（由于某种原因，堆栈溢出不喜欢所有正在格式化的代码）；

==============================================

    import pygame
    import sys
    import random

    from pygame.locals import *

    pygame.init()

    FPS = 60
    FPSClock = pygame.time.Clock()

    screen = pygame.display.set_mode((800, 600))
    pygame.display.set_caption("Graphical Slot Machine")

    reelgroupone = pygame.sprite.Group()
    reelgrouptwo = pygame.sprite.Group()
    reelgroupthree = pygame.sprite.Group()

    reelone = (reelgroupone, 1)
    reeltwo = (reelgrouptwo, 2)
    reelthree = (reelgroupthree, 3)

    image = "assets/apple.png"
    image2 = "assets/bar.png"
    image3 = "assets/cherry.png"
    image4 = "assets/orange.png"
    background = "background.jpg"

    class Reels(pygame.sprite.Sprite):
        def __init__(self, reelgroup, reelnumbers):
            self.reelgroup = reelgroup
            self.reelnumber = reelnumbers
            self.reellist = [0, 1, 2, 3, 4, 5]
            self.reelmove = 1
            self.reelnudge = 0
            self.stoptime = 60

        def start(self):
             self.reelmove = 1
        self.stoptime = 60

    def stop(self):
        self.reelmove = 0

    def update(self):
        if self.stoptime > 0:
            self.stoptime -= 1
            self.reelgroup.update()
        else:
            self.stop()
        if self.reelnudge == 1:
            self.reelmove = 0

    def draw(self):
        self.reelgroup.draw(screen)

class Fruit(pygame.sprite.Sprite):

    def __init__(self, reelgroup, reel, FruitID):
        pygame.sprite.Sprite.__init__(self)
        self.reelgroup = reelgroup
        self.FruitID = FruitID
        self.machineReel = reel

        # Depending on Reel ID use a specific image, place the file path in the string
        if self.FruitID == 1:
            self.reelImage = "assets/apple.png"
        if self.FruitID == 2:
            self.reelImage = "assets/bar.png"
        if self.FruitID == 3:
            self.reelImage = "assets/cherry.png"
        if self.FruitID == 4:
            self.picture = "assets/orange.png"

        self.pic = pygame.image.load(self.reelImage).convert_alpha()
        self.where = ((self.machineReel * 155) - 30, 490)
        self.rectangle = self.pic.get_rect()
        self.rectangle.TopLeft = self.where
        # Make reels faster / slower here.
        self.reelSpeed = 8
        self.reelgroup.add(self)

    def fruitupdate(self):
        self.rectangle.y -= self.reelSpeed
        if self.rectangle.y < 110:
            self.kill()


class main():
    def __init__(self):
        self.money = 10
        self.counter = 5
        self.fruitlist = [[0,0,0,0,0], [0,0,0,0,0], [0,0,0,0,0]]
        self.finished = 0
        self.message = ""

    def splash(self):
        pass

    def machine(self):
        while self.credits > 0:
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    pygame.quit()
                    sys.exit()
            self.keys = pygame.key.get_pressed()

            # Change this key to whatever you want
            if self.keys[K_p] and reelone.reelmove == reeltwo.reelmove == reelthree.reelmove == 0:
                self.money -= 1
                self.counter = 5
                self.finished = 0
                reelone.start()
                reeltwo.start()
                reelthree.start()
                self.message = ""
            if self.keys[K_ESCAPE]:
                pygame.quit()
                sys.exit()

            # Put your image and font blitting here.

            screen.blit(background,(0,0))

            if self.money >= 10:
                self.counter = 1
                if reelone.reelMove == 1 and reelone.stopTime % 10:
                    fruit = Fruit(reelgroupone, 1, random.randint(1,4))
                    del self.fruitlist[0][0]
                    self.fruitlist[0].append(fruit.ID)
                if reeltwo.reelMove == 1 and reeltwo.stopTime % 10:
                    fruit = Fruit(reelgrouptwo, 2, random.randint(1,4))
                    del self.fruitlist[1][0]
                    self.fruitlist[1].append(fruit.ID)
                if reelthree.reelMove == 1 and reelthree.stopTime % 10:
                    fruit = Fruit(reelgroupthree, 3, random.randint(1,4))
                    del self.fruitlist[2][0]
                    self.fruitlist[2].append(fruit.ID)
                else:
                    self.counter += 1
                if reelone.reelmove == 1:
                    reelone.update()
                if reeltwo.reelmove == 1:
                    reeltwo.update()
                if reelthree.reelmove == 1:
                    reelthree.update()

                # If all the reels are moving, check if the player has won and add the credits to their
                # account if so.
                if reelone.reelmove == reeltwo.reelmove == reelthree.reelmove == 0 and self.finished == 0:
                    if self.fruitlist[0][2] == self.fruitlist[1][2] ==  self.fruitlist[2][2]:
                        self.message = "Winner, want to play again?"
                        if self.fruitlist[0][2] == 1:
                            self.credits += 10
                        if self.fruitlist[0][2] == 1:
                            self.credits += 100
                        if self.fruitlist[0][2] == 3:
                            self.credits += 1000
                        if self.fruitlist[0][2] == 4:
                            self.credits += 10000
                        # Now this sets the state to finished
                        self.finished = 1
                    else:
                        self.message = "Sorry, no win this time!"
                        self.end = 1

            reelgroupone.draw(screen)
            reelgrouptwo.draw(screen)
            reelgroupthree.draw(screen)

    FPSClock.tick(FPS)
    pygame.display.update()

fruit = main()

Answer 1

您实际上并没有在代码中将main（）作为函数运行，而是main是一个类。 将main更改为一个函数，而是在程序底部编写以下代码：

If __name__ == "__main__": 
    main()

这样，代码实际运行了。 另外，摆脱掉fruit = main() 。 这只会使它更加混乱，您将因此而继续运行它，因此为什么它表示过程已完成。 您可能还想在main函数的main类中先前移动的东西。 例如，将类内部的函数（例如machine（）函数）作为代码外部的单独函数放置，然后使用machine（）在主函数中调用它。