[Solved] How to fix “list assignment index out of range” python3

Question

This code has multiple design issues but the immediate one seems to be how played squares are removed from the list hody:

hody = [1, 2, 3, 4, 5, 6, 7, 8, 9]

Squares are removed by index:

elif (k == 5) and k in hody:
    # ...       
    del(hody[k - 1])

But once a square is removed, the indexes change as the list shrinks! You can fix this simply by global text replacing the dozen and a half lines that read:

 del(hody[k - 1])

to be:

 hody.remove(k)

Now we’re removing the squares by value so the order of removals doesn’t matter. But there are other problems, for example:

j = 10
# ...
for i in range(j):

This loop controls the number of moves in the game. There are only nine turns maximum, but it allows for ten moves! (j ranges from 0 through 9.)

Let’s try to rationalize this code:

from turtle import Screen, Turtle

def draw_X(x, y):
    pl2.penup()
    pl2.goto(x, y)
    pl2.pendown()
    pl2.goto(x + 80, y - 80)
    pl2.penup()
    pl2.goto(x + 80, y)
    pl2.pendown()
    pl2.goto(x, y - 80)

def draw_0(x, y):
    pl1.penup()
    pl1.goto(x, y)
    pl1.pendown()
    pl1.circle(40)

pole = Turtle()
pole.hideturtle()
pole.speed('fastest')

pole.penup()
pole.goto(-170, 170)
pole.pendown()

for _ in range(4):
    pole.forward(300)
    pole.right(90)

for _ in range(2):
    pole.forward(100)
    pole.right(90)
    pole.forward(300)
    pole.left(90)
    pole.forward(100)
    pole.left(90)
    pole.forward(300)

    pole.right(90)
    pole.forward(100)
    pole.right(90)

hody = [1, 2, 3, 4, 5, 6, 7, 8, 9]

pl1 = Turtle()
pl1.hideturtle()
pl1.color("blue")

pl2 = Turtle()
pl2.hideturtle()
pl2.color("red")

p = input("Хто буде ходити першим X чи 0 ?: ")  # who will go first? X or 0?

while hody:
    k = int(input("Введіть клітинку: "))  # user choose the number of area

    if k in hody:
        if p.lower() == "x":
            if k == 1:
                draw_X(-158.89, 158.89)
            elif k == 2:
                draw_X(-58.89, 158.89)
            elif k == 3:
                draw_X(40.89, 158.89)
            elif k == 4:
                draw_X(-158.89, 58.89)
            elif k == 5:
                draw_X(-59.89, 58.89)
            elif k == 6:
                draw_X(40.89, 58.89)
            elif k == 7:
                draw_X(-158.89, -42.89)
            elif k == 8:
                draw_X(-59.89, -40.89)
            elif k == 9:
                draw_X(40.89, -40.89)

            p = "0"  # successful move, switch players
        elif p.lower() in ("0", 'o'):
            if k == 1:
                draw_0(-119.39, 79.44)
            elif k == 2:
                draw_0(-19.39, 79.44)
            elif k == 3:
                draw_0(81.39, 79.44)
            elif k == 4:
                draw_0(-119.39, -21.44)
            elif k == 5:
                draw_0(-19.39, -21.44)
            elif k == 6:
                draw_0(81.39, -21.44)
            elif k == 7:
                draw_0(-119.39, -121.44)
            elif k == 8:
                draw_0(-19.39, -121.44)
            elif k == 9:
                draw_0(81.39, -121.44)

            p = "x"  # successful move, switch players

        hody.remove(k)


screen = Screen()
screen.mainloop()

Still not complete, and still not as clean as we could make it, but should be clean enough to build the next stage of the code: scoring the game?

Accepted Answer