Как создать координатную сетку с точками?

canvas = Canvas(paint_frame,height='500', width='600')
h = h_entry.get()
w = w_entry.get()
 
def calculate(h,w):
    for i in range(h+1):
        k = 50*i
        canvas.create_line(10+k,0,10+k,500)
 
        for j in range(w+1):
            k = 50*j
            canvas.create_line(0,k+10,600,k+10)
    canvas.pack(fill=BOTH, expand=True)

from matplotlib.figure import Figure
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk
import tkinter as tk
 
root = tk.Tk()
window = tk.Canvas(root)
window.pack()
plotWindow = tk.Frame(root)
plotWindow.pack()
 
figure = Figure(figsize=(5, 5))
a = figure.add_subplot(111)
x = [-100, 100]
y = [0, 4]
a.plot(x, y, '-r')
a.grid()
canvas = FigureCanvasTkAgg(figure, master=window)
canvas.get_tk_widget().pack()
NavigationToolbar2Tk(canvas, plotWindow)
canvas.draw()
 
root.mainloop()

h = 7
w = 4
h_p, w_p = h//2, w//2
x_p,y_p = 48,48
canvas = Canvas(paint_frame, height='600', width='600')
for i in range(h + 1):
    k = 50 * i
    canvas.create_line(k + 1, 0, k + 1, w*50+2)
if h != w:
    if h > w:
        if h%2 == 0:
            h_p, w_p = w_p, h_p
 
 
for _ in range(h_p):
    for _ in range(w_p):
        canvas.create_oval(x_p, y_p, x_p+5, y_p+5, width = 10, fill='#ff0000')
        x_p +=100
    x_p=48
    y_p+=100
 
for j in range(w + 1):
    k = 50 * j
    canvas.create_line(0, k + 1, h*50+2, k + 1)
 
canvas.pack(fill=BOTH, expand=True)