from tkinter import *
import math
import random

Width = 640
Height = 400
m = 10000

window = Tk()
canvas = Canvas(window, width = Width, height = Height, bg = "#000000")
canvas.pack()
img = PhotoImage(width = Width, height = Height)
canvas.create_image(Width // 2, Height // 2, image = img, state = "normal")

#for x in range(Width):
#	for y in range(Height):
#		img.put("#00ff66", (x, y))

for a in range(0,m) :
	y = random.randint(0, Height)
	x = random.randint(0, Width) 
	img.put("#ffffff", (x, y))

mainloop()