fileIO & pygame help

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fileIO & pygame help

 
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  #1
Nov 8th, 2009
I am trying to make pygame draw a shape from a list of shapes imported with fileIO but i get a pygame import error please help

Python Syntax (Toggle Plain Text) 
  1. import random
  2. import pygame
  3. w = 640
  4. h = 480
  5.  
  6. x = open("shapes.txt")
  7. z = x.readlines()[n]
  8. n = random.randrange(6)
  9.  
  10. screen = pygame.display.set_mode((w, h))
  11. pygame.draw.z(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 50 )
  12.  
  13. for event in pygame.event.get():
  14.         if event.type == QUIT:
  15.             exit()
this is my my "shapes.txt"

circle
rect
line
line
rect
circle
Attached Files
File Type: txt shapes.txt (38 Bytes, 1 views)
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  #2
Nov 8th, 2009
say if n was circle, this is what python interprets:

python Syntax (Toggle Plain Text) 
  1. pygame.draw."circle"(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 50 )

now thats not code; its a string. you could add if statements like so:

python Syntax (Toggle Plain Text) 
  1. if z == 'circle':
  2.     pygame.draw.circle(arguements_go_here)
  3. elif z == 'line':
  4.     # code for drawing line here
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  #3
Nov 8th, 2009
Python Syntax (Toggle Plain Text) 
  1. import random
  2. import pygame
  3. w = 640
  4. h = 480
  5.  
  6. n = random.randrange(6)
  7. x = open("shapes.txt")
  8. z = x.readlines()[n]
  9.  
  10. screen = pygame.display.set_mode((w, h))
  11. if z == "circle":
  12.     pygame.draw.circle(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 50 )
  13. elif z == "line":
  14.     pygame.draw.line(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 50 )
  15. elif z == "rect":
  16.     pygame.draw.rect(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 50 )
  17.  
  18.  
  19.  
  20. for event in pygame.event.get():
  21.         if event.type == QUIT:
  22.             exit()

my new code but i get this error now

Message File Name Line Position
Traceback
<module> C:\Users\Curtie\Desktop\HomeWork\CSET\codes\assignment_11\assignment_11.py 2
<module> L:\PortableApps\PortablePython_1.1_py3.0.1\App\lib\site-packages\pygame\__init__.py 95
ImportError: DLL load failed: The specified module could not be found.
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  #4
Nov 9th, 2009
try

python Syntax (Toggle Plain Text) 
  1. import pygame
  2. from pygame.locals import *

if that doesn't work, make sure you have the pygame that matches up with your version of python
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  #5
Nov 9th, 2009
also, if that fails, try reinstalling your version of pygame
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  #6
Nov 9th, 2009
Quick hint: Instead of the condition cascade
Python Syntax (Toggle Plain Text) 
  1. if z == "circle": ... elif ...
consider a more pythonically succinct approach:
Python Syntax (Toggle Plain Text) 
  1. assert n in ('circle', 'line', 'rect')
  2. draw = getattr(pygame.draw, n)
  3. draw(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 50 )
Last edited by pythopian; Nov 9th, 2009 at 11:43 am.
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  #7
Nov 9th, 2009
ive reinstalled python and pygame ive added the
Python Syntax (Toggle Plain Text) 
  1.  import pygame
  2. from pygame.locals import *
with no results....i am using 3.01. it works in 2.61 but i am required to use 3.01 does anyone else no what might be causing this?
also its in just the import pygame function as i have tested just running that and get the same error code
Last edited by CurtisEClark; Nov 9th, 2009 at 3:39 pm.
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  #8
Nov 10th, 2009
Python Syntax (Toggle Plain Text) 
  1. import random
  2. import pygame
  3.  
  4. w = 640
  5. h = 480
  6.  
  7. n = random.randrange(6)
  8. x = open("shapes.txt")
  9. z = x.readlines()[n]
  10.  
  11.  
  12.  
  13. screen = pygame.display.set_mode((w, h))
  14. if z == "circle":
  15.     pygame.draw.circle(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 100 )
  16. elif z == "line":
  17.     pygame.draw.line(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 100 )
  18. elif z == "rect":
  19.     pygame.draw.rect(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 100 )
This code works in 2.6.1 but when there are no shapes just a black screen, is there a way to fix this?
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  #9
Nov 10th, 2009
Python Syntax (Toggle Plain Text) 
  1. import random
  2. import pygame
  3.  
  4. w = 640
  5. h = 480
  6.  
  7. n = random.randrange(6)
  8. x = open("shapes.txt")
  9. z = x.readlines()[n]
  10.  
  11.  
  12.  
  13. screen = pygame.display.set_mode((w, h))
  14. if "circle" in z:
  15.     pygame.draw.circle(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 50 )
  16. elif "line" in z:
  17.     pygame.draw.line(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 50 )
  18. elif "rect" in z:
  19.     pygame.draw.rect(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 50 )

I've fixed the main problem but now i get

Traceback (most recent call last):
File "<string>", line 244, in run_nodebug
File "C:\Users\Curtie\Desktop\HomeWork\CSET\codes\assignment_11\assignment_112.py", line 17, in <module>
pygame.draw.line(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 50 )
TypeError: Invalid end position argument
>>>
Traceback (most recent call last):
File "<string>", line 244, in run_nodebug
File "C:\Users\Curtie\Desktop\HomeWork\CSET\codes\assignment_11\assignment_112.py", line 19, in <module>
pygame.draw.rect(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 50 )
TypeError: Rect argument is invalid
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  #10
Nov 10th, 2009
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Originally Posted by CurtisEClark View Post
Python Syntax (Toggle Plain Text) 
  1. import random
  2. import pygame
  3.  
  4. w = 640
  5. h = 480
  6.  
  7. n = random.randrange(6)
  8. x = open("shapes.txt")
  9. z = x.readlines()[n]
  10.  
  11.  
  12.  
  13. screen = pygame.display.set_mode((w, h))
  14. if z == "circle":
  15.     pygame.draw.circle(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 100 )
  16. elif z == "line":
  17.     pygame.draw.line(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 100 )
  18. elif z == "rect":
  19.     pygame.draw.rect(screen, (random.randrange(255), random.randrange(255), random.randrange(255)), (random.randrange(640), random.randrange(480)), 100 )
This code works in 2.6.1 but when there are no shapes just a black screen, is there a way to fix this?
You need to read the pygame manual!

Drawing a line, circle or rectangle takes different arguments. They all have screen and color in common, but then they diverge. A line takes 2 coordinate points for start and end of line. A circle takes one coordinate point for the center and a radius value. The rectangle takes diagonal corner coordinates.

You also need to call
pygame.display.flip()
for anything to show

... and last not least an event loop at the end.
May 'the Google' be with you!
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