Open your Paint at fullscreen and let your code draw nested circles with your mouse.

mouser.py

import win32api, win32con
import math

widest = 1000
narrowest = 100
step = 100
num_of_points = 100

def click(x, y):
#https://stackoverflow.com/questions/1181464/controlling-mouse-with-python
    win32api.SetCursorPos((x, y))
    win32api.mouse_event(win32con.MOUSEEVENTF_LEFTDOWN, x, y, 0, 0)
    win32api.mouse_event(win32con.MOUSEEVENTF_LEFTUP, x, y, 0, 0)

def PointsInCircum(r, n=num_of_points):
#https://stackoverflow.com/questions/8487893/generate-all-the-points-on-the-circumference-of-a-circle
    return [(math.cos(2*math.pi/n*x)*r, math.sin(2*math.pi/n*x)*r) for x in range(0, n+1)]

for r in range(narrowest, widest, num_of_points):
    for i in PointsInCircum(r, 100):
        x = int(i[0]) + 360
        y = int(i[1]) + 360
        print(str(x) + " " + str(y))
        click(x, y)