Rewriting loop without breaks-CodePudding

Below is the code that I want to replicate without using break ///

while True:
    choice = input("Is it time to choose(Y/N)? ")
    if choice.upper() == "N": 
        break
    idx = random.randint(0, len(contents))
    fnd = False
    for i in range(3):
        for j in range(3):
            if table[i][j] == contents[idx]:
                table[i][j] = "SEEN"
                fnd = True
                break
        if fnd:
            break
    won = check_win(table)
    print_table(table)
    if won:
        print("The game has been won!!")
        break

Can't figure out, already tried using variables but can't make it work

CodePudding user response：

Let's handle this case by case. (I'm leaving initializing variables up to you, btw.)

while True:
    choice = input("Is it time to choose(Y/N)? ")
    if choice.upper() == "N": 
        break

The above break statement could be removed by having a playing variable. Change while True: to while playing, and then set playing to false if the player chooses; put the rest of the loop body in the else branch.

    idx = random.randint(0, len(contents))
    fnd = False
    for i in range(3):
        for j in range(3):
            if table[i][j] == contents[idx]:
                table[i][j] = "SEEN"
                fnd = True
                break
        if fnd:
            break

I'm taking the above two break statements to be independent of the top-level while loop, as that's the way it's currently coded. You could re-code these as two nested while loops that increment counters- while i < 3 && !fnd and while j < 3 && !fnd, though that's messy. The inner one could also be handled with index()

    won = check_win(table)
    print_table(table)
    if won:
        print("The game has been won!!")
        break

This last one is the easiest: Just change the loop condition to while playing && !won

That's messy, but it should be equivalent. I might be able to make it cleaner if I knew what you were trying to do with the code as a whole.

CodePudding user response：

You can use a flag instead:

w_flag = True
while w_flag:
    choice = input("Is it time to choose(Y/N)? ")
    if choice.upper() == "N": 
        w_flag = False
    
    if w_flag:
        idx = random.randint(0, len(contents))
        fnd = False
        i,j = 0,0
        i_flag = True
        while i < 3 and i_flag:
            j_flag = True
            while j < 3 and j_flag:
                if table[i][j] == contents[idx]:
                    table[i][j] = "SEEN"
                    fnd = True
                    j_flag = False
                j  = 1
            if fnd:
                i_flag = False
            i  = 1
        
        won = check_win(table)
        print_table(table)
        if won:
            print("The game has been won!!")
            w_flag = False