Langton's Ant

(graphic program)

from math import *
from tkinter import *
from time import *
wx=1000
wy=1000
f=Tk()
grid=Canvas(f,width=wx,height=wy,bg="black")
grid.pack()
res=10
val=list(range(0,100))
for i in val:
    val[i]=list(range(0,100))
for x in range(0,100):
    for y in range(0,100):
        val[x][y]="black"
ax=50
ay=50
ad=1
while True:
    if ad<1:
        ad=4
        continue
    if ad==1:
        ax=ax+1
    if ad==2:
        ay=ay+1
    if ad==3:
        ax=ax-1
    if ad==4:
        ay=ay-1
    if ad>4:
        ad=1
        continue
    if val[ax][ay]=="black":
        val[ax][ay]="white"
        grid.create_rectangle(res*ax,res*ay,res*ax+res,res*ay+res,outline="",fill=val[ax][ay])
        grid.update()
        ad=ad+1
    elif val[ax][ay]=="white":
        val[ax][ay]="black"
        grid.create_rectangle(res*ax,res*ay,res*ax+res,res*ay+res,outline="",fill=val[ax][ay])
        grid.update()
        ad=ad-1
grid.mainloop()