Python 为什么它无视代码？

我试图在游戏开始时制作一个“动画”，但随着我的代码的继续，它开始对我所做的更改没有反应。例如，即使我使ML=9999999而不是从ML=1开始，它仍然会重置动画。这对我来说毫无意义。请提前帮助和感谢

    elif V == 4:
        if event.type == event_250ms:
            if ML == 1:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN1, (40, 140))
                B(LLCS1, (400, 240))
                ML = 2
            elif ML == 2:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN2, (41, 140))
                B(LLCS2, (399, 240))
                ML = 3
            elif ML == 3:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN3, (42, 140))
                B(LLCS3, (398, 240))
                ML = 4
            elif ML == 4:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN4, (43, 140))
                B(LLCS4, (397, 240))
                ML = 5
            elif ML == 5:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN5, (44, 140))
                B(LLCS5, (396, 240))
                ML = 6
            elif ML == 6:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN6, (45, 140))
                B(LLCS6, (395, 240))
                ML = 7
            elif ML == 7:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN7, (46, 140))
                B(LLCS7, (394, 240))
                ML = 1
            elif ML == 8:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN8, (47, 140))
                B(LLCS8, (393, 240))
                ML = 9
            elif ML == 9:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN9, (48, 140))
                B(LLCS9, (392, 240))
                ML = 10
            elif ML == 10:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN10, (49, 140))
                B(LLCS10, (391, 240))
                ML = 11
            elif ML == 11:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN11, (50, 140))
                B(LLCS11, (390, 240))
                ML = 12
            elif ML == 12:
                D.fill(MEXON)
                x_coord = 0
                y_coord = 0
                direction = 'up'
                B(LLCN12, (51, 140))
                B(LLCS12, (389, 240))
                ML = 1

这是有关动画的代码。接下来是我声明所有声明的部分

import pygame, sys, random
from pygame.locals import *

pygame.init()

BLACK =          (  0,   0,   0)
PINDLER =        (255, 123,  90)
MEXON =          (200, 180, 220)
WHITE =          (255, 255, 255)
YELLOW =         (255, 255,   0)
RED =            (255,   0,   0)
BLUE =           (  0,   0, 255)

size = [700, 500]
D = pygame.display.set_mode(size)
L = pygame.draw.aaline
R = pygame.draw.rect
G = random.randrange(1, 10)
GM = 1
GMT = 2
CIP = 1
SH = 0
AAC = 2
CHBP = 0
STHB = 1
CC = 0
CM = 1
PL = pygame.draw.line
PE = pygame.draw.ellipse
GMFT = 0
HTT = 0
CO = 2
V = 5
ML = 1
PFO = 0
CL = 0
Blue = 1
Red = 1
LEVEL = 1
event_250ms = pygame.USEREVENT + 1
pygame.time.set_timer(event_250ms, 250)

pygame.display.set_caption("Moline")
myfont1 = pygame.font.SysFont("monospace", 40)
myfont2 = pygame.font.SysFont("monospace", 60)
myfont3 = pygame.font.SysFont("monospace", 20)
myfont4 = pygame.font.SysFont("monospace", 100)
T1 = myfont1.render
T2 = myfont2.render
T3 = myfont3.render
T4 = myfont4.render
MOL = "MOLINE"
M1S = "DIRECTIONS:"
M2S = "1. Use the arrow keys to control the four characters"
M2F = " off of the track to move them."
M3S = "2. To win a level, line up the four characters on"
M3F = " the crossmark before the runner on the track"
M3C = " reaches the finish line."
M4S = "3. If the runner reaches the finish line, then"
M4F = " you lose."
M5S = "4. When you lose you go back to level one. There"
M5F = " are eight levels."
M6S = "5. Key input makes the runner move slightly"
M6F = " faster, but he will move without input."
M6C = " Additionally, mouse movement makes him even faster."
M7S = "6. It should be noted that whenever you click to"
M7F = " start, the game will immediately begin so have"
M7C = " your arrow keys ready to go."
ISC = "Left-Click to Start Game"
LEST = "Level: "
LU1 = "1"
LU2 = "2"
LU3 = "3"
LU4 = "4"
LU5 = "5"
LU6 = "6"
LU7 = "7"
LU8 = "8"
VTC2 = "Left-Click To Begin Next Level"
VTC3 = "Left-Click To Start Over"
VTC1 = "Left-Click to Start Over"
VT3 = "YOU WIN!!!"
VT2 = "LEVEL COMPLETE"
VT1 = "GAME OVER"
LCN = "Titancorp"
LCS = "Studios"
LCP = "Presents"
LLCS1 = T2(LCS, 1, (200, 180, 220))
LLCS2 = T2(LCS, 1, (205, 187, 200))
LLCS3 = T2(LCS, 1, (210, 194, 180))
LLCS4 = T2(LCS, 1, (215, 201, 160))
LLCS5 = T2(LCS, 1, (220, 208, 140))
LLCS6 = T2(LCS, 1, (225, 215, 120))
LLCS7 = T2(LCS, 1, (230, 222, 100))
LLCS8 = T2(LCS, 1, (235, 229,  80))
LLCS9 = T2(LCS, 1, (240, 236,  60))
LLCS10 = T2(LCS, 1, (245, 243,  40))
LLCS11 = T2(LCS, 1, (250, 250,  20))
LLCS12 = T2(LCS, 1, (255, 255,   0))



LLCN1 = T2(LCN, 1, (200, 180, 220))
LLCN2 = T2(LCN, 1, (205, 187, 200))
LLCN3 = T2(LCN, 1, (210, 194, 180))
LLCN4 = T2(LCN, 1, (215, 201, 160))
LLCN5 = T2(LCN, 1, (220, 208, 140))
LLCN6 = T2(LCN, 1, (225, 215, 120))
LLCN7 = T2(LCN, 1, (230, 222, 100))
LLCN8 = T2(LCN, 1, (235, 229,  80))
LLCN9 = T2(LCN, 1, (240, 236,  60))
LLCN10 = T2(LCN, 1, (245, 243,  40))
LLCN11 = T2(LCN, 1, (250, 250,  20))
LLCN12 = T2(LCN, 1, (255, 255,   0))



#MOLINE TEXT GOES AT (170, 70)
LLCN10000 = T4(MOL, 1, (255, 255, 0))
LLCN2000 = T4(MOL, 1, (235, 235, 50))
LLCN30000 = T4(MOL, 1, (225, 220, 100))
LLCN4000 = T4(MOL, 1, (215, 205, 200))
LLCN50000 = T4(MOL, 1, (200, 180, 220))
L1 = T3(M1S, 1, (255, 255, 0))
L2 = T3(M2S, 1, (255, 255, 0))
L2C = T3(M2F, 1, (255, 255, 0))
L3 = T3(M3S, 1, (255, 255, 0))
L3C = T3(M3F, 1, (255, 255, 0))
L3F = T3(M3C, 1, (255, 255, 0))
L4 = T3(M4S, 1, (255, 255, 0))
L4C = T3(M4F, 1, (255, 255, 0))
L5 = T3(M5S, 1, (255, 255, 0))
L5C = T3 (M5F, 1, (255, 255, 0))
L6 = T3(M6S, 1, (255, 255, 0))
L6C = T3(M6F, 1, (255, 255, 0))
L6F = T3(M6C, 1, (255, 255, 0))
L7 = T3(M7S, 1, (255, 255, 0))
L7C = T3(M7F, 1, (255, 255, 0))
L7F = T3(M7C, 1, (255, 255, 0))
SFGL = T1(ISC, 1, (255, 255, 0))
LES = T3(LEST, 1, (255, 255, 0))
LAS1 = T3(LU1, 1, (255, 255, 0))
LAS2 = T3(LU2, 1, (255, 255, 0))
LAS3 = T3(LU3, 1, (255, 255, 0))
LAS4 = T3(LU4, 1, (255, 255, 0))
LAS5 = T3(LU5, 1, (255, 255, 0))
LAS6 = T3(LU6, 1, (255, 255, 0))
LAS7 = T3(LU7, 1, (255, 255, 0))
LAS8 = T3(LU8, 1, (255, 255, 0))
V3CB = T3(VTC3, 1, (255, 255,   0))
V3CY = T3(VTC3, 1, (  0,   0, 255))
V2CB = T3(VTC2, 1, (255, 255,   0))
V2CY = T3(VTC2, 1, (  0,   0, 255))
V1CB = T3(VTC1, 1, (  0,   0,   0))
V1CR = T3(VTC1, 1, (255,   0,   0))
V3B = T2(VT3, 1, (255, 255,   0))
V3Y = T2(VT3, 1, (  0,   0,   0))
V2B = T2(VT2, 1, (255, 255,   0))
V2Y = T2(VT2, 1, (  0,   0, 255))
V1R = T2(VT1, 1, (  0,   0,   0))
V1B = T2(VT1, 1, (255,   0,   0))
B = D.blit
Fx = 10
Fy = 10

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您是否在问为什么正在运行的程序不能反映您在开始运行后所做的更改？这样不行，Python在编译时加载整个脚本。它从不在以后寻找更改。

我发现了我的问题。我在代码中再次输入了一个错误，其中ML=1，而不是前进到ML=8。此外，我意识到我的问题相当模糊，因此我对此表示歉意。

寻求调试帮助的问题（“为什么此代码不起作用？”）必须包括所需的行为、特定的问题或错误以及在问题本身中复制它所需的最短代码。没有明确问题陈述的问题对其他读者没有用处。请参阅：。