constrain_mouse_pointer_to_rect.py

from time import sleep
from pynput import mouse, keyboard

def constrain(val, min_val, max_val):
    return min(max_val, max(min_val, val))

def on_press(key):
    global end
    global correct
    if key == keyboard.Key.end: end = True
    if key == keyboard.Key.tab: correct = not correct

CPS = 300 # Corrections Per Second
rect = {"top_left":  {"x": 0,    "y": 0},
        "bot_right": {"x": 1350, "y": 767}}

end = False
correct = True
mouse = mouse.Controller()
kb_listener = keyboard.Listener(on_press = on_press)
kb_listener.start()
while not end:
    sleep(1/CPS)
    if correct:
        x, y = mouse.position
        mouse.position = (constrain(x, rect["top_left"]["x"], rect["bot_right"]["x"]),
                          constrain(y, rect["top_left"]["y"], rect["bot_right"]["y"]))