This program plays the classic tile matching game. The object of the game is to find all the matching tiles by turning over two tiles at a time. If the colors match, the tiles are removed. If not, then the tiles are replaced and two more tiles are turned over. The game is over once all the matching colors have been found.

This implementation of the game allows the player to select the number of rows and columns of tiles. Unfortunately, this sometimes causes problems. The game currently runs without issue for the default number of rows and columns, however if the player chooses an odd number of rows and an odd number of columns, the game will crash.

Your task is to identify the cause of the crash and modify the game to both:

$1.$ Prevent the game from crashing regardless of what values for rows and columns are entered $($you may assume that both values will always be greater than $0)$

$2.$ Allow the game to be played successfully regardless of what values for rows and columns are selected.

The number of rows and columns may be selected by starting the game and selecting File $->$ Options

import time

from tkinter import $*$

from random import randint

class ButtonWrapper:

def $\_\_$init$\_\_($self$,$ id$="",$ row$=-1,$ col$=-1,$ c$="")$:

self.ID $=$ id

self.ROW $=$ row

self.COL $=$ col

self.COLOR $=$ c

self.BUTTON$\_$OBJ $=$ None

def check$\_$match$()$:

global buttons

clicked $=[]$

for b in buttons.values$()$:

if b$.$BUTTON$\_$OBJ$[\text{'}$relief$\text{'}]==$ "sunken":

clicked.append$($b$)$

if len$($clicked$)>=2$:

if clicked$[0].$BUTTON$\_$OBJ$[\text{'}$bg$\text{'}]==$ clicked$[1].$BUTTON$\_$OBJ$[\text{'}$bg$\text{'}]$:

clicked$[0].$BUTTON$\_$OBJ.configure$($fg$=$'black', bg$=$'black', relief$=$'raised'$)$

clicked$[1].$BUTTON$\_$OBJ.configure$($fg$=$'black', bg$=$'black', relief$=$'raised'$)$

else:

clicked$[0].$BUTTON$\_$OBJ.configure$($fg$=$'SystemButtonFace', bg$=$'SystemButtonFace', relief$=$'raised'$)$

clicked$[1].$BUTTON$\_$OBJ.configure$($fg$=$'SystemButtonFace', bg$=$'SystemButtonFace', relief$=$'raised'$)$

def button$\_$pushed$($pushed$\_$id$)$:

global buttons

buttons$[$pushed$\_$id$].$BUTTON$\_$OBJ.configure$($bg$=$buttons$[$pushed$\_$id$].$COLOR, relief$=$"sunken"$)$

buttons$[$pushed$\_$id$].$BUTTON$\_$OBJ.after$(1500,$ check$\_$match$)$

def close$\_$options$($top$)$:

top.destroy$()$

def save$\_$options$($r$,$ c$)$:

global rows, cols

rows $=$ r

cols $=$ c

reset$\_$game$()$

def options$()$:

top $=$ Toplevel$($root$)$

top.geometry$("250$x$250")$

row$\_$val $=$ StringVar$()$

col$\_$val $=$ StringVar$()$

row $=$ Entry$($top$,$ width$=25,$ textvariable$=$row$\_$val$)$

row.pack$()$

col $=$ Entry$($top$,$ width$=25,$ textvariable$=$col$\_$val$)$

col.pack$()$

save $=$ Button$($top$,$ text$=$"Save", command$=$lambda: save$\_$options$($int$($row$\_$val.get$()),$ int$($col$\_$val.get$())))$

close $=$ Button$($top$,$ text$=$"Close", command$=$lambda: close$\_$options$($top$))$

save.pack$($pady$=5,$ side$=$TOP$)$

close.pack$($pady$=5,$ side$=$TOP$)$

def reset$\_$game$()$:

global buttons

for b in buttons.values$()$:

b$.$BUTTON$\_$OBJ.destroy$()$

buttons $=\{\}$ # Clear the button dictionary

for i in range$($rows$)$:

for j in range$($cols$)$:

id $=($i $*$ cols$)+$ j # Calculate the button id

b $=$ ButtonWrapper$($id$=$str$($id$),$ row$=$i$,$ col$=$j$)$ # Create the button meta data object

b$.$BUTTON$\_$OBJ $=$ Button$($root$,$ text$="",$ command$=$lambda bid$=$b$.$ID: button$\_$pushed$($bid$),$ height$=3,$ width$=7)$

buttons$[$b$.$ID$]=$ b # Save the button meta data object in the dictionary

ids $=$ list$($range$($rows $*$ cols$))$ # Make a list of all button IDs

while len$($ids$)>0$: # While there are still IDs in the list

a $=$ ids$[$randint$(0,$ len$($ids$)-1)]$ # Pick a random button ID

ids.remove$($a$)$ # Remove it from the list

b $=$ ids$[$randint$(0,$ len$($ids$)-1)]$ # Pick a second random button ID

ids.remove$($b$)$ # Remove it from the list as well

color $=$ colors$[$randint$(0,$ len$($colors$)-1)]$ # Pick a random color

buttons$[$str$($a$)].$COLOR $=$ color # Set both buttons to the same color

buttons$[$str$($b$)].$COLOR $=$ color

for b in buttons.values$()$:

b$.$BUTTON$\_$OBJ.configure$($fg$=$'SystemButtonFace', bg$=$'SystemButtonFace', relief$=$'raised'$)$

b$.$BUTTON$\_$OBJ.configure$($fg$=$'SystemButtonFace', bg$=$'SystemButtonFace', relief$=$'raised'$)$

f in buttons.values$()$:

b$.$BUTTON$\_$OBJ.grid$($row$=$b$.$ROW, column$=$b$.$COL$)$

rows $=5$

cols $=6$

buttons $=\{\}$

root $=$ Tk$()$

menubar $=$ Menu$($root$)$ # Creating Menubar

colors $=[\text{'}$red$\text{'},$ 'green', 'blue', 'cyan', 'yellow', 'magenta'$]$

file $=$ Menu$($menubar$,$ tearoff$=0)$

menubar.add$\_$cascade$($label$=$'File', menu$=$file$)$

file.add$\_$command$($label$=$'New Game', command$=$reset$\_$game$)$

file.add$\_$command$($label$=$'Options', command$=$options$)$

file.add$\_$separator$()$

file.add$\_$command$($label$=$'Exit', command$=$root.destroy$)$

reset$\_$game$()$

root.grid$\_$rowconfigure$(0,$ minsize$=40)$

root.config$($menu$=$menubar$)$

root.mainloop$()$