[Python] Infinite LOOP function [closed]

I am writing a sort-of complex but mostly simple program in python.

When I use the LOOP function in the code shown below, and nest it into itself, it repeats infinitely. I have given up on other methods to figure out the problem, and have resorted to Stack Overflow. Can anybody help me?

import tkinter as tk
import sklearn as sk
import re
from numba import cuda
import threading

root = tk.Tk()
root.title("gVars (glowfroot visualization and rendering system)")

frame = tk.Canvas(root)
frame.grid(row=2, column=1)

text = tk.Text(root)
text.grid(row=2, column=0)

label = tk.Label(root, text="No errors yet!")
label.grid(row=3, column=0)

def SubmitCode():
code = text.get('1.0', "end")
return code

def Create_Pixel(x, y, color):
frame.create_rectangle(x, y, x, y, fill=color, outline="")


def ParseCode(code3, array):
try:
x = 0
y = 0
if (code3[0] == "PIX"):
if(code3[1] in array):
x = float(array[code3[1]])
else:
x = float(code3[1])

if(code3[2] in array):
y = float(array[code3[2]])
else:
y = float(code3[2])


Create_Pixel(x, y, code3[3])

except Exception as exc:
print(exc)
label.config(text=str(exc))
print("You found this at the PIX function!")

def ExecCode():
k = 0
kbool = False
code = SubmitCode()
array = {}
code0 = code.strip().split('\n')
j = 0
stack = []
while j < len(code0):
code05 = code0[j]
code1 = code05.split(';')
i = 0
while i < len(code1):

code2 = code1
code3 = code2.split(' ')

if(code3[0] == "LOOP"):

print("stack is 0")
stack.append(code3[2])
stack[-1] = int(stack[-1])
stack[-1] -= 1

if(int(stack[-1]) > 0):
j = int(code3[1]) - 2
else:
stack.pop()


if(code3[0] == "SET"):
array[code3[1]] = code3[2]
elif (code3[0] == "PLUS"):
array[str(code3[1])] = float(array.get(str(code3[1]), 0)) + float(code3[2])
elif (code3[0] == "TIMES"):
array[str(code3[1])] = float(array.get(str(code3[1]), 0)) * float(code3[2])
else:
ParseCode(code3, array)
k += 1;
i += 1
j += 1

def DeleteCode():
frame.delete("all")

send = tk.Button(text="Send over", command=ExecCode)
send.grid(row=0, column=0)

delete = tk.Button(text="Delete image", command=DeleteCode)
delete.grid(row=0, column=1)

root.mainloop()


Ignore the variables and stuff that I forgot to take out. The only thing I am focusing on is the LOOP function. ParseCode() draws a pixel with a "PIX" function, and I know the problem is not with that. Thanks!

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