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I was trying to make a simple Sudoku game. Then, I tried to create some cells by using pygame.draw.rect() so when you click one I the programme know which one you touched. But there are 81 and I can't write each variable so I tried to use exec() but it just didn't work. The programme is not ended.

If you find another problem please notify me.

Here is my programme:

Problematic lines are showed with this: ***

import pygame, sys
from pygame.locals import *

pygame.init()

screen_high = 512
screen_width = 512

screen = pygame.display.set_mode((screen_width, screen_high))

pygame.display.set_caption("Sudoku")

board = pygame.transform.scale(pygame.image.load('board.png'), (screen_high, screen_width))

A = [0, 0, 0, 0, 0, 0, 0, 0, 0]
B = [0, 0, 0, 0, 0, 0, 0, 0, 0]
C = [0, 0, 0, 0, 0, 0, 0, 0, 0]
D = [0, 0, 0, 0, 0, 0, 0, 0, 0]
E = [0, 0, 0, 0, 0, 0, 0, 0, 0]
F = [0, 0, 0, 0, 0, 0, 0, 0, 0]
G = [0, 0, 0, 0, 0, 0, 0, 0, 0]
H = [0, 0, 0, 0, 0, 0, 0, 0, 0]
I = [0, 0, 0, 0, 0, 0, 0, 0, 0]

columns = [A, B, C, D, F, G, H, I]
columstr = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I']

c_num = ''
r_num = ''

cells = []

xx = 0
yy = 0

def create():
    
    global n, A, B, C, D, E, F, G, H, I
    
    n = random.randint(1, 7)
    
    if n == 1:
        
        A = [5, 6, 0, 8, 4, 7, 0, 0, 0]
        B = [3, 0, 9, 0, 0, 0, 6, 0, 0]
        C = [0, 0, 0, 0, 0, 0, 0, 0, 0]
        D = [0, 0, 0, 0, 0, 0, 0, 0, 0]
        E = [0, 0, 0, 0, 0, 0, 0, 0, 0]
        F = [0, 0, 0, 0, 0, 0, 0, 0, 0]
        G = [0, 0, 0, 0, 0, 0, 0, 0, 0]
        H = [0, 0, 0, 0, 0, 0, 0, 0, 0]
        I = [0, 0, 0, 0, 0, 0, 0, 0, 0]

def put_numb(whr1, whr2, wht):
    
    global columns, c_num, r_num
    
    for i in range(len(columns)):
        
        if whr1 == columstr[i]:
            
            c_num = i
            r_num = whr2 - 1

    columns[c_num].pop(r_num)
    columns[c_num].insert(r_num, wht)
    
def put_all():
    
    global columns, columstr, A, B, C, D, E, F, G, H, I
    
    
def check_touch():
    
    for i in range(len(cells)):
        
***       if pygame.Rect.colliderect( cells[i], mouse ) == True:
            
            print(cells)

value = ''
var = ''

def make_rectBoard():
    
    global cells, xx, yy, value, var
    
    for i in range(81):
        
***        value = pygame.draw.rect(screen, (0, 0, 0), (xx + 52, yy + 52, 50, 50))
        
***        var = 'cell' + str(i)
        
***        print(cells.append(exec(f"{var} = pygame.draw.rect(screen, (120, 0, 0), (xx + 52, yy ***+ 52, 50, 50))")))

while True:
    
    mouse_pos = pygame.mouse.get_pos()
    mouse_click = pygame.mouse.get_pressed()
    
    pygame.display.update()
    
    screen.fill((0, 0, 0))
    
    screen.blit(board, (0, 0))
    
    make_rectBoard()
    
    mouse = pygame.draw.rect(screen, (204, 180, 20), (mouse_pos[0] + 1, mouse_pos[1] + 1, 10, 10))
    
    for event in pygame.event.get():

        if event.type == pygame.QUIT:

            pygame.quit()
            sys.exit()
            
        elif event.type == pygame.MOUSEBUTTONDOWN:
            
            check_touch()

Thank you, I tried all I could with that method but nothing happened. That you see is the latest thing I tried. Probably it's easy. I'm not sure, thanks for all.

Paula Serrano
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    Have you considered having _just one_ variable that stores _all_ the columns? – Charles Duffy Sep 02 '23 at 18:23
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    As a smaller example: `board = [ [0, 0, 0], [0,0,0], [0,0,0] ]` -- there you are, only _one_ "board" variable, no reason to use `exec` or `eval` or anything else like it. – Charles Duffy Sep 02 '23 at 18:24
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    You shouldn't use `exec`, use a *container*, like a `list` or a `dict` – juanpa.arrivillaga Sep 02 '23 at 18:25
  • You might see [labeling multi-dimensional array coordinates in Python](https://stackoverflow.com/questions/40392726/labeling-multi-dimensional-array-coordinates-in-python) as an example of a question asked my someone using that approach, which incidentally shows some of their work (even though the question itself isn't quite identical). Similarly relevant enough to maybe learn from is [Creating a 2d grid in Python](https://stackoverflow.com/questions/11052920/creating-a-2d-grid-in-python) – Charles Duffy Sep 02 '23 at 18:27
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    Where is the use of `exec` taught and why? I have over 20 years of experience with Python and have never used it in my programs. – Matthias Sep 02 '23 at 19:21

0 Answers0