Could you please help me? I can't figure out what I'm doing wrong. I made a Sudoku generator for my friend and I want it to be able to print both a puzzle and the correct solution. I made the code so it generates a solved puzzle first, and then randomly removes an assigned number of cells from the completed grid to make a puzzle to solve. What I want to do is create a copy of the generated puzzle before I remove cells, and that way I can print both the puzzle and the solution. But when I do it for some reason the solution is a duplicate of the modified puzzle, even though I assigned the variable with the data before modifying the completed puzzle. Here's the code I'm using:

#Import Python's random library, which allows for random number generation
import random

def generate_sudoku():
    # Create an empty 9x9 grid
    grid = [[0] * 9 for _ in range(9)]
    
    # Fill in the grid to create a completed Sudoku grid
    fill_numbers(grid)
    
    # Store the completed grid as the solution
    solution = grid
    
    # Remove some numbers to turn a completed
    # Sudoku grid into a puzzle
    remove_numbers(grid)
    
    # Output the generated puzzle and the solution
    return grid, solution

def fill_numbers(grid):
    # Generate a shuffled list of numbers from 1 to 9
    num_list = list(range(1, 10))
    random.shuffle(num_list)
    
    # Start the recursive process to fill numbers in the grid
    return fill_numbers_recursive(grid, num_list, 0)

def fill_numbers_recursive(grid, num_list, index):
    # Base case: if the index exceeds the last cell, the grid is filled completely
    if index >= 81:
        return True

    row = index // 9  # Calculate the row index from the current index
    col = index % 9   # Calculate the column index from the current index

    if grid[row][col] != 0:
        # If the current cell is already filled, move to the next cell
        return fill_numbers_recursive(grid, num_list, index + 1)

    random.shuffle(num_list)
    for num in num_list:
        if is_valid_move(grid, row, col, num):
            # If the current number is valid for the current cell, fill it in
            grid[row][col] = num
            if fill_numbers_recursive(grid, num_list, index + 1):
                # Recursively fill the next cell
                return True
            grid[row][col] = 0  # Backtrack if the next cell cannot be filled

    return False

def is_valid_move(grid, row, col, num):
    # Check if assigning the number to the given cell violates Sudoku rules
    
    # Check the row
    for j in range(9):
        if grid[row][j] == num:
            return False
    
    # Check the column
    for i in range(9):
        if grid[i][col] == num:
            return False
    
    # Check the 3x3 box
    box_start_row = 3 * (row // 3)
    box_start_col = 3 * (col // 3)
    for i in range(3):
        for j in range(3):
            if grid[box_start_row + i][box_start_col + j] == num:
                return False
    
    return True

def remove_numbers(grid):
    # Remove some numbers from the solved puzzle to create the puzzle
    
    # Determine the difficulty level (adjust the range of removals as desired)
    num_removals = 64
    
    # Check to see if the number of removals has been set to a value greater
    # than 64. Valid Sudoku puzzles must have at least 17 values
    # so this code ensures no more than 64 numbers are removed from the
    # completed Sudoku game.
    if num_removals >= 65:
        num_removals = 64

    # Collect the indices of non-zero cells
    non_zero_indices = [(i, j) for i in range(9) for j in range(9) if grid[i][j] != 0]
    
    # Randomly select cells from non_zero_indices and remove their values
    removal_indices = random.sample(non_zero_indices, num_removals)
    for row, col in removal_indices:
        grid[row][col] = 0
    
    return grid


def display_sudoku(grid):
    # Display the Sudoku grid
    for i in range(9):
        if i % 3 == 0 and i != 0:
            # Create a decorative horizontal dashed line to segment rows
            print("- - - - - - - - - - -")
        for j in range(9):
            if j % 3 == 0 and j != 0:
                # Create a decorative vertical dashed line to segment columns
                print("|", end=" ")
            if grid[i][j] == 0:
                # Fill each blank cell with a dot
                print(".", end=" ")
            else:
                # Place the numbers in the displayed puzzle
                print(grid[i][j], end=" ")
        print()

if __name__ == "__main__":
    # Generate and display a new Sudoku puzzle
    grid, solution = generate_sudoku()
    
    print("Here is your puzzle:")
    display_sudoku(grid)
    
    print("\nHere is the completed puzzle:")
    display_sudoku(solution)
system
aap kripaya mujhe madad kar saktaa he?main yah pataa nahin laga saktaa ki main kya galat kar rahaa hum.maine apane dost ke liye ek sudoku janarator banaaya or main chahta hum ki yah ek paheli or sahi samaadhaan donon ko print karne main sakasham ho.maine code banaaya he, isliye yah pehle ek hal kii gai paheli utpann karata he, or phir betaratib dhang se purna kiye gaye grid se koshikaon kii ek nirdhaarit sankhya ko hataata he taaki hal karne ke liye ek paheli bana sake.main jo karnaa chahta hum vah koshikaon ko hataane se pehle utpann paheli kii ek prati bana rahaa he, or is tarah main paheli or samaadhaan donon ko print kar saktaa hum.lekin jab main ise kisi kaaran se karata hum to samaadhaan sanshodhit paheli kaa ek dupliket he, bhale hi maine purna paheli ko sanshodhit karne se pehle data ke saath char ko saunpa.yahan main jis code kaa upyog kar rahaa hum:

#Import paythan kii yadrichhik pustkaalay, jo yadrichhik sankhya peedi ke liye anumati detaa he
yadrichhik aayaat

def generate_sudoku ():
    # ek khaali 9x9 grid banaaen
    grid = [[0] * 9 ke liye _ range (9) main]
    
    # ek purna sudoku grid banane ke liye grid main bharen
    fill_numbers (grid)
    
    # samaadhaan ke rup main purna grid ko store karen
    samaadhaan = grid
    
    # ek purna hone ke liye kuch number nikaalen
    # ek paheli main sudoku grid
    remove_numbers (grid)
    
    # utpann paheli or samaadhaan kaa utpaadan karen
    vaapasi grid, samaadhaan

def fill_numbers (grid):
    # 1 se 9 tak sankhyaon kii ek pherbadal suchi utpann karen
    num_list = suchi (range (1, 10))
    random.shafal (num_list)
    
    # grid main number bharne ke liye punaravarti prakriya shuru karen
    vaapasi fill_numbers_recursive (grid, num_list, 0)

def fill_numbers_recursive (grid, num_list, index):
    # base cese: yadi index antim cell se adhik he, to grid puri tarah se bharaa hua he
    yadi suchakank> = 81:
        sahi vaapasi

    pankti = suchakank // 9 # vartmaan suchakank se pankti suchakank kii gananaa karen
    COL = INDEX % 9 # vartmaan suchakank se kollam index kii gananaa karen

    yadi grid [pankti] [col]! = 0:
        # yadi vartmaan cell pehle se bharaa he, to agle cell par jaaen
        vaapasi fill_numbers_recursive (grid, num_list, index + 1)

    random.shafal (num_list)
    NUM_LIST main NUM ke liye:
        yadi is_valid_move (grid, pankti, karnal, sankhya):
            # yadi vartmaan sankhya vartmaan cell ke liye maanya he, to ise bharen
            grid [pankti] [karnal] = sankhya
            yadi fill_numbers_recursive (grid, num_list, index + 1):
                # punaravarti agle cell ko bharen
                sahi vaapasi
            grid [pankti] [col] = 0 # bekatrack yadi agali cell bhar nahin ja saktaa he

    vivaran jhootha he

def is_valid_move (grid, pankti, karnal, sankhya):
    # jaanch karen ki die gaye cell ko number asin karnaa sudoku niyamon kaa ulanghan karata he
    
    # pankti kii jaanch karen
    range main j ke liye (9):
        yadi grid [pankti] [j] == sankhya:
            vivaran jhootha he
    
    # kollam kii jaanch karen
    ke liye main range main (9):
        yadi grid [i] [Col] == NUM:
            vivaran jhootha he
    
    # 3x3 box kii jaanch karen
    box_start_row = 3 * (pankti // 3)
    box_start_col = 3 * (col // 3)
    main range main (3) ke liye:
        range main j ke liye (3):
            yadi grid [box_start_row + i] [box_start_col + j] == num:
                vivaran jhootha he
    
    sahi vaapasi

Def remove_numbers (grid):
    # paheli banane ke liye hal kii gai paheli se kuch numberon ko hataa den
    
    # kathinaayee str nirdhaarit karen (vaanchit ke rup main hataane kii seemaa ko samyojit karen)
    num_removals = 64
    
    # yah dekhne ke liye jaanch karen ki kya nishkasana kii sankhya adhik se adhik mulya par set kii gai he
    # 64 se adhik. vaid sudoku paheli main kam se kam 17 maan hone chahie
    # to yah code yah sunishchit karata he ki 64 se adhik sankhyaon ko se hataa diya jaae
    # puraa sudoku khel.
    yadi num_removals> = 65:
        num_removals = 64

    # gaiyr-shunya koshikaon ke suchakaankon ko ekatra karen
    non_zero_indices = [(i, j) i main range (9) ke liye j ke liye range (9) yadi grid [i] [j]! = 0]
    
    # betaratib dhang se non_zero_indices se koshikaon kaa chayan karen or unke maanon ko hataa den
    REMOVAL_INDICES = random.sample (NON_ZERO_INDICES, NUM_REMOVALS)
    ROW ke liye, COL in Remoll_indices:
        grid [pankti] [karnal] = 0
    
    vaapasi grid


DEF DISPLAY_SUDOKU (GRID):
    # sudoku grid pradarshit karen
    ke liye main range main (9):
        agar main % 3 == 0 or main! = 0:
            # khand panktiyon ke liye ek sajaavati kshaitij dharashayi line banaaen
            print (" - - - - - - - - - - -")
        range main j ke liye (9):
            yadi j % 3 == 0 or j! = 0:
                # segment kollam ke liye ek sajaavati urdhwadhar dharashayi line banaaen
                print ("|", ant = "")
            yadi grid [i] [j] == 0:
                # prayek rikt cell ko ek dot ke saath bharen
                print (".", ant = "")
            anya:
                # pradarshit paheli main sankhyaon ko rakhen
                print (grid [i] [j], ant = "")
        print ()

yadi __name__ == "__main__":
    # ek nai sudoku paheli utpann karen or pradarshit karen
    grid, samaadhaan = generate_sudoku ()
    
    print ("yahan aapaki paheli he:")
    disple_sudoku (grid)
    
    print ("\ nhere purna paheli he:")
    disple_sudoku (samaadhaan)
user
assistant
<|system|>
</s>
<|user|>
aap kripaya mujhe madad kar saktaa he?main yah pataa nahin laga saktaa ki main kya galat kar rahaa hum.maine apane dost ke liye ek sudoku janarator banaaya or main chahta hum ki yah ek paheli or sahi samaadhaan donon ko print karne main sakasham ho.maine code banaaya he, isliye yah pehle ek hal kii gai paheli utpann karata he, or phir betaratib dhang se purna kiye gaye grid se koshikaon kii ek nirdhaarit sankhya ko hataata he taaki hal karne ke liye ek paheli bana sake.main jo karnaa chahta hum vah koshikaon ko hataane se pehle utpann paheli kii ek prati bana rahaa he, or is tarah main paheli or samaadhaan donon ko print kar saktaa hum.lekin jab main ise kisi kaaran se karata hum to samaadhaan sanshodhit paheli kaa ek dupliket he, bhale hi maine purna paheli ko sanshodhit karne se pehle data ke saath char ko saunpa.yahan main jis code kaa upyog kar rahaa hum:

#Import paythan kii yadrichhik pustkaalay, jo yadrichhik sankhya peedi ke liye anumati detaa he
yadrichhik aayaat

def generate_sudoku ():
    # ek khaali 9x9 grid banaaen
    grid = [[0] * 9 ke liye _ range (9) main]
    
    # ek purna sudoku grid banane ke liye grid main bharen
    fill_numbers (grid)
    
    # samaadhaan ke rup main purna grid ko store karen
    samaadhaan = grid
    
    # ek purna hone ke liye kuch number nikaalen
    # ek paheli main sudoku grid
    remove_numbers (grid)
    
    # utpann paheli or samaadhaan kaa utpaadan karen
    vaapasi grid, samaadhaan

def fill_numbers (grid):
    # 1 se 9 tak sankhyaon kii ek pherbadal suchi utpann karen
    num_list = suchi (range (1, 10))
    random.shafal (num_list)
    
    # grid main number bharne ke liye punaravarti prakriya shuru karen
    vaapasi fill_numbers_recursive (grid, num_list, 0)

def fill_numbers_recursive (grid, num_list, index):
    # base cese: yadi index antim cell se adhik he, to grid puri tarah se bharaa hua he
    yadi suchakank> = 81:
        sahi vaapasi

    pankti = suchakank // 9 # vartmaan suchakank se pankti suchakank kii gananaa karen
    COL = INDEX % 9 # vartmaan suchakank se kollam index kii gananaa karen

    yadi grid [pankti] [col]! = 0:
        # yadi vartmaan cell pehle se bharaa he, to agle cell par jaaen
        vaapasi fill_numbers_recursive (grid, num_list, index + 1)

    random.shafal (num_list)
    NUM_LIST main NUM ke liye:
        yadi is_valid_move (grid, pankti, karnal, sankhya):
            # yadi vartmaan sankhya vartmaan cell ke liye maanya he, to ise bharen
            grid [pankti] [karnal] = sankhya
            yadi fill_numbers_recursive (grid, num_list, index + 1):
                # punaravarti agle cell ko bharen
                sahi vaapasi
            grid [pankti] [col] = 0 # bekatrack yadi agali cell bhar nahin ja saktaa he

    vivaran jhootha he

def is_valid_move (grid, pankti, karnal, sankhya):
    # jaanch karen ki die gaye cell ko number asin karnaa sudoku niyamon kaa ulanghan karata he
    
    # pankti kii jaanch karen
    range main j ke liye (9):
        yadi grid [pankti] [j] == sankhya:
            vivaran jhootha he
    
    # kollam kii jaanch karen
    ke liye main range main (9):
        yadi grid [i] [Col] == NUM:
            vivaran jhootha he
    
    # 3x3 box kii jaanch karen
    box_start_row = 3 * (pankti // 3)
    box_start_col = 3 * (col // 3)
    main range main (3) ke liye:
        range main j ke liye (3):
            yadi grid [box_start_row + i] [box_start_col + j] == num:
                vivaran jhootha he
    
    sahi vaapasi

Def remove_numbers (grid):
    # paheli banane ke liye hal kii gai paheli se kuch numberon ko hataa den
    
    # kathinaayee str nirdhaarit karen (vaanchit ke rup main hataane kii seemaa ko samyojit karen)
    num_removals = 64
    
    # yah dekhne ke liye jaanch karen ki kya nishkasana kii sankhya adhik se adhik mulya par set kii gai he
    # 64 se adhik. vaid sudoku paheli main kam se kam 17 maan hone chahie
    # to yah code yah sunishchit karata he ki 64 se adhik sankhyaon ko se hataa diya jaae
    # puraa sudoku khel.
    yadi num_removals> = 65:
        num_removals = 64

    # gaiyr-shunya koshikaon ke suchakaankon ko ekatra karen
    non_zero_indices = [(i, j) i main range (9) ke liye j ke liye range (9) yadi grid [i] [j]! = 0]
    
    # betaratib dhang se non_zero_indices se koshikaon kaa chayan karen or unke maanon ko hataa den
    REMOVAL_INDICES = random.sample (NON_ZERO_INDICES, NUM_REMOVALS)
    ROW ke liye, COL in Remoll_indices:
        grid [pankti] [karnal] = 0
    
    vaapasi grid


DEF DISPLAY_SUDOKU (GRID):
    # sudoku grid pradarshit karen
    ke liye main range main (9):
        agar main % 3 == 0 or main! = 0:
            # khand panktiyon ke liye ek sajaavati kshaitij dharashayi line banaaen
            print (" - - - - - - - - - - -")
        range main j ke liye (9):
            yadi j % 3 == 0 or j! = 0:
                # segment kollam ke liye ek sajaavati urdhwadhar dharashayi line banaaen
                print ("|", ant = "")
            yadi grid [i] [j] == 0:
                # prayek rikt cell ko ek dot ke saath bharen
                print (".", ant = "")
            anya:
                # pradarshit paheli main sankhyaon ko rakhen
                print (grid [i] [j], ant = "")
        print ()

yadi __name__ == "__main__":
    # ek nai sudoku paheli utpann karen or pradarshit karen
    grid, samaadhaan = generate_sudoku ()
    
    print ("yahan aapaki paheli he:")
    disple_sudoku (grid)
    
    print ("\ nhere purna paheli he:")
    disple_sudoku (samaadhaan)</s>
<|assistant|>
</s>
