Syntax Error

[jliddlejths]

Please could you look at the code and see what wrong with it.

It saying syntax error with elif code.

https://drive.google.com/file/d/1in-315 ... sp=sharing

[pcmanbob]

Hi.

If you want help with your code and its error then please post your code by copying and pasting it in to your post , not forgetting to use code tags

Add [code] at the top

code goes here

and [/code] at the bottom.

that way people can download it and test it, and please post the full error message as it will give use more information on which line of code has the error.

A quick look suggests your indentation is off on the elif line

[DirkS]

A quick look suggests your indentation is off on the elif line

Probably the line *after* elif, starting with 'if'

But there are more problems. The indentation after the 'sys.exit()' cannot be correct. It puts all the code below it inside the 'gameover' procedure, meaning it will never be reached...

[pcmanbob]

A quick look suggests your indentation is off on the elif line

Probably the line *after* elif, starting with 'if'

But there are more problems. The indentation after the 'sys.exit()' cannot be correct. It puts all the code below it inside the 'gameover' procedure, meaning it will never be reached...

The elif is not indented to match the if statement above it either.

[jliddlejths]

A quick look suggests your indentation is off on the elif line

Probably the line *after* elif, starting with 'if'

But there are more problems. The indentation after the 'sys.exit()' cannot be correct. It puts all the code below it inside the 'gameover' procedure, meaning it will never be reached...

Hi, Below is the full code so you can see it more clearly and test it

code][/code]
#!/usr/bin/env python
# Raspbery Snake
# Written by Gareth Halfacree for the Raspberry Pi User Guide

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

pygame.init ()
fpsclock = pygame.time.Clock ()

playSurface = pygame.display.set_mode ((640, 480))
pygame.display.set_caption ('Raspberry Snake')

redColour = pygame.Color (255, 0, 0)
blackColour = pygame.Color (0, 0, 0)
whiteColour = pygame.Color (255, 255, 255)
greyColour = pygame.Color (150, 150, 150)
snakePosition = [100,100]
snakeSegments = [[100,100],[80,100],[60,100]]
raspberryPosition = [300,300]
raspberrySpawned = 1
direction = 'right'
changeDirection = direction

def gameOver ():
gameOverFont = pygame.font.Font('freesansbold.ttf', 72)
gameOverSurf = gameOverFont.render ('Game Over', True, greyColour)
gameOverRect = gameOverSurf.get_rect()
gameOverRect.midtop = (320, 10)
playSurface.blit(gameOverSurf, gameOverRect)
pygame.display.flip ()
time.sleep (5)
pygame.quit()
sys.exit()


while True:
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()


elif event.type == KEYDOWN:
if event.key == K_RIGHT or event.key == ord ('d'):
changeDirection = 'right'
if event.key == K_LEFT or event.key == ord ('a'):
changeDirection = 'left'
if event.key == K_UP or event.key == ord ('w'):
changeDirection = 'up'
if event.key == K_DOWN or event.key == ord ('s'):
changeDirection = 'down'
if event.key == K_ESCAPE:
pygame.event.post (pygame.event.Event (QUIT))

if changeDirection == 'right' and not direction == 'left':
direction = changeDirection
if changeDirection == 'left' and not direction == 'right':
direction = changeDirection
if changeDirection == 'up' and not direction == 'down':
direction = changeDirection
if changeDirection == 'down' and not direction == 'up':
direction = changeDirection
if direction == 'right':
snakePosition [0] += 20
if direction == 'left':
snakePosition [0] -= 20
if direction == 'up':
snakePosition [1] -= 20
if direction == 'down':
snakePosition [1] += 20
snakeSegments.insert (0,list(snakePosition))
if snakePosition [0] == raspberryPosition [0] and snakePosition [1] == raspberryPosition [1]:
raspberrySpawned = 0


else:
snakeSegments.pop()
if aspberrySpawned == 0:
x = random.randrange (1,32)
y = random.randrange (1,24)
raspberryPosition = [int (x*20), int (y*20) ]
raspberrySpawned = 1
playSurface.fill (blackColour)
for position in snakeSegments:
pygame.draw.rect (playSurface,whiteColour, Rect (position [0], position [1], 20,20))

pygame.draw.rect (playSurface,redColour,Rect (raspberryPosition [0], raspberryPosition[1], 20,20))
pygame.display.flip()
if snakePosition [0] > 620 or snakePosition[0] < 0:[0]
gameOver()
if snakePosition[1] > 460 or snakePosition[1] < 0:
for snakeBody in snakeSegments[1:]:
if snakePosition[0] == snakeBody and snakePosition[1] == snakeBody[1]:
gameOver()
fpsClock.tick(30)

Code: Select all

Thanks
Jamie

[B.Goode]

Reposted with working Code tag markup. It seems simple to me...

A quick look suggests your indentation is off on the elif line

Probably the line *after* elif, starting with 'if'

But there are more problems. The indentation after the 'sys.exit()' cannot be correct. It puts all the code below it inside the 'gameover' procedure, meaning it will never be reached...

Hi, Below is the full code so you can see it more clearly and test it

code][/code]

Code: Select all

#!/usr/bin/env python
# Raspbery Snake
# Written by Gareth Halfacree for the Raspberry Pi User Guide

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

pygame.init ()
fpsclock = pygame.time.Clock ()

playSurface = pygame.display.set_mode ((640, 480))
pygame.display.set_caption ('Raspberry Snake')

redColour = pygame.Color (255, 0, 0)
blackColour = pygame.Color (0, 0, 0)
whiteColour = pygame.Color (255, 255, 255)
greyColour = pygame.Color (150, 150, 150)
snakePosition = [100,100]
snakeSegments = [[100,100],[80,100],[60,100]]
raspberryPosition = [300,300]
raspberrySpawned = 1
direction = 'right'
changeDirection = direction

def gameOver ():
    gameOverFont = pygame.font.Font('freesansbold.ttf', 72)
    gameOverSurf = gameOverFont.render ('Game Over', True, greyColour)
    gameOverRect = gameOverSurf.get_rect()
    gameOverRect.midtop =  (320, 10)
    playSurface.blit(gameOverSurf, gameOverRect)
    pygame.display.flip ()
    time.sleep (5)
    pygame.quit()
    sys.exit()


while True:
    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()


 elif event.type == KEYDOWN:
            if event.key == K_RIGHT or event.key == ord ('d'):
                        changeDirection = 'right'
                        if event.key == K_LEFT or event.key == ord ('a'):
                            changeDirection = 'left'
                            if event.key == K_UP or event.key == ord ('w'):
                                changeDirection = 'up'
                                if event.key == K_DOWN or event.key == ord ('s'):
                                    changeDirection = 'down'
                                    if event.key == K_ESCAPE:
                                        pygame.event.post (pygame.event.Event (QUIT))

                                        if changeDirection == 'right' and not direction == 'left':
                                            direction = changeDirection
                                            if changeDirection == 'left' and not direction == 'right':
                                                direction = changeDirection
                                                if changeDirection == 'up' and not direction == 'down':
                                                    direction = changeDirection
                                                    if changeDirection == 'down' and not direction == 'up':
                                                        direction = changeDirection
                                                        if direction == 'right':
                                                            snakePosition [0] += 20
                                                            if direction == 'left':
                                                                snakePosition [0] -= 20
                                                                if direction == 'up':
                                                                    snakePosition [1] -= 20
                                                                    if direction == 'down':
                                                                        snakePosition [1] += 20
                                                                        snakeSegments.insert (0,list(snakePosition))
                                                                        if snakePosition [0] == raspberryPosition [0] and snakePosition [1] == raspberryPosition [1]:
                                                                            raspberrySpawned = 0


                                                        else:
                                                            snakeSegments.pop()
                                                            if aspberrySpawned == 0:
                                                                x = random.randrange (1,32)
                                                                y = random.randrange (1,24)
                                                                raspberryPosition = [int (x*20), int (y*20) ]
                                                                raspberrySpawned = 1
                                                                playSurface.fill (blackColour)
                                                                for position in snakeSegments:
                                                                    pygame.draw.rect (playSurface,whiteColour, Rect (position [0], position [1], 20,20))

                                                                    pygame.draw.rect (playSurface,redColour,Rect (raspberryPosition [0], raspberryPosition[1], 20,20))
                                                                    pygame.display.flip()
                                                                    if snakePosition [0] > 620 or snakePosition[0] < 0:[0] 
                                                                        gameOver()
                                                                        if snakePosition[1] > 460 or snakePosition[1] < 0:
                                                                            for snakeBody in snakeSegments[1:]:
                                                                                if snakePosition[0] == snakeBody and snakePosition[1] == snakeBody[1]:
                                                                                    gameOver()
                                                                                    fpsClock.tick(30)
                                                                                    
                                                        

Code: Select all

Thanks
Jamie

[B.Goode]

I would expect the Raspberry Pi User Guide and it's co-author Gareth Halfacree to be reliable. I therefore suspect some error has occurred in acquiring the script.

[jliddlejths]

I would expect the Raspberry Pi User Guide and it's co-author Gareth Halfacree to be reliable. I therefore suspect some error has occurred in acquiring the script.

I now fix the code but now I get a different message:
I get the Raspberry Pi Snake come up but it is a blank screen when I close it, I get this error:
Traceback (most recent call last):
File “/home/pi/snake3.py” , line 38, in <module>
for event in pygame.event.get():
error: video system not initialized